[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFeEhwR7vUsr897Xb-D04FMvFB83eFagQf8D9QKbKKxA":3,"donations-sidebar":8,"posts-{\"page\":1,\"pageSize\":10,\"tagId\":\"0f1cc678-40e4-44b1-b2cf-a6fd8a1c867a\"}":9,"sidebar-data":78},{"id":4,"name":5,"slug":5,"createdAt":6,"updatedAt":7},"0f1cc678-40e4-44b1-b2cf-a6fd8a1c867a","npm","2022-05-21T09:59:56.000Z","2023-02-08T02:49:14.000Z",[],{"list":10,"total":75,"page":76,"pageSize":77},[11,32,47,61],{"id":12,"title":13,"slug":14,"content":15,"excerpt":13,"coverImage":16,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":20,"publishedAt":21,"createdAt":21,"updatedAt":22,"category":23,"author":27,"tags":30},"e5d658f5-ffa1-481e-913d-c8eb165fced5","快速删除node_modules","快速删除node-modules","### 用户痛点\n> 删除node_modules太慢，或者各种权限不足等问题\n\n### 使用步骤\n```shell\nnpm install rimraf -g \n```\n\n>输入绝对路径\u002F相对路径都可以\n```shell\nrimraf .\u002Fnode_modules\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002Ff0bd7e70c911c09ac95cf426ccecb118.png","PUBLISHED",false,null,659,"2022-10-10T06:23:55.000Z","2026-05-24T20:16:42.000Z",{"id":24,"name":25,"slug":26},"73a5f62c-3c47-45b9-9ae2-f29953ae8dc0","Node","node",{"id":28,"name":29,"avatar":19},"f9d0f2de-c700-4f90-b535-afd3dbe78128","Admin",[31],{"id":4,"name":5,"slug":5},{"id":33,"title":34,"slug":35,"content":36,"excerpt":34,"coverImage":37,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":38,"publishedAt":39,"createdAt":39,"updatedAt":40,"category":41,"author":44,"tags":45},"b014a109-4f81-4e96-992f-65ea67e371b5","Yarn 安装与使用教程","yarn-安装与使用教程","## Yarn介绍\n\n> Yarn 是 Facebook, Google, Exponent 和 Tilde 开发的一款新的 JavaScript 包管理工具。 你可以通过它使用全世界开发者的代码，或者分享自己的代码。代码通过包（package）（或者称为模块（module））的方式来共享。 一个包里包含所有需要共享的代码，以及描述包信息的文件，称为package.json。它的优点是更快、更安全、更可靠。它的主要特性有离线模式、确定性、网络性能、多注册、网络恢复能力、扁平模式以及 Emoji。\n\n\n\n## Yarn 的优点\n\n- 快速：Yarn 缓存了每个下载过的包，所以再次使用时无需重复下载。 同时利用并行下载以最大化资源利用率，因此安装速度更快。\n\n- 可靠：使用详细、简洁的锁文件格式和明确的安装算法，Yarn 能够保证在不同系统上无差异的工作。\n\n- 安全：在执行代码之前，Yarn 会通过算法校验每个安装包的完整性。\n\n\n\n\n## Yarn安装\n\n```shell\nnpm install -g yarn\n```\n\n\n\n## yarn 的安装路径和缓存路径\n\n> 查看 yarn 全局bin位置\n\n```shell\nyarn global bin\n```\n\n\n\n> 查看 yarn 全局安装位置\n\n```shell\nyarn global dir\n```\n\n\n\n> 查看 yarn 全局cache位置\n\n```shell\nyarn cache dir\n```\n\n\n\n> 改变 yarn 全局bin位置\n\n```\nyarn config set prefix \\\"D:\\NodeNvm\\yarn\\Data\\\"\n```\n\n\n\n> 改变 yarn 全局安装位置\n\n```\nyarn config  set global-folder \\\"D:\\NodeNvm\\yarn\\Data\\global\\\"\n```\n\n\n\n> 改变 yarn 全局cache位置\n\n```\nyarn config set cache-folder \\\"D:\\NodeNvm\\yarn\\Cache\\\"\n```\n\n\n\n> 改变 yarn 全局 link 位置\n\n```\nyarn config set link-folder \\\"D:\\NodeNvm\\yarn\\Data\\link\\\"\n```\n\n\n\n## 配置环境变量\n\n> 将全局路径配置在环境变量中此电脑 -> 属性 -> 高级系统设置 -> 环境变量 -> 系统变量 -> path ->编辑 - > 新增路径 -D:\\software\\\nodeJs\\info\\\node_global （路径可以根据npm prefix -g查看）\n>\n> \n\n## Yarn命令\n\n### 查看版本\n\n```shell\nyarn --version\n```\n\n\n\n### 【1】初始化新项目\n\n```shell\nyarn init\n```\n\n\n\n### 【2】添加依赖包\n\n\n\n#### 会自动安装最新版本，会覆盖指定版本号\n\n```shell\nyarn add [package] \n```\n\n\n\n#### 一次性添加多个包\n\n```shell\nyarn add [package] [package] [package]\n```\n\n\n\n#### 添加指定版本的包\n\n```shell\nyarn add [package]@[version]\n```\n\n\n\n#### 安装某个tag（比如beta,next或者latest）\n\n```shell\nyarn add [package]@[tag] \n```\n\n\n\n### 【3】将依赖项添加到不同依赖项类别\n\n> 不指定依赖类型默认安装到dependencies里，你也可以指定依赖类型分别添加到 devDependencies、peerDependencies 和 optionalDependencies\n\n```shell\nyarn add [package] --dev 或 yarn add [package] -D \u002F\u002F 加到 devDependencies\nyarn add [package] --peer 或 yarn add [package] -P \u002F\u002F 加到 peerDependencies\nyarn add [package] --optional 或 yarn add [package] -O \u002F\u002F 加到 optionalDependencies\n```\n\n\n\n### 【4】升级依赖包\n\n```shell\nyarn upgrade [package] \u002F\u002F 升级到最新版本\nyarn upgrade [package]@[version] \u002F\u002F 升级到指定版本\nyarn upgrade [package]@[tag] \u002F\u002F 升级到指定tag\n```\n\n\n\n### 【5】移除依赖包\n\n```shell\nyarn remove [package] \u002F\u002F 移除包\n```\n\n\n\n### 【6】安装package.json里的包依赖，并将包及它的所有依赖项保存进yarn.lock\n\n\n\n#### 安装所有依赖\n\n```shell\nyarn 或 yarn install \n```\n\n\n\n#### 安装一个包的单一版本\n\n```shell\nyarn install --flat\n```\n\n\n\n#### 强制重新下载所有包\n\n```shell\nyarn install --force\n```\n\n\n\n#### 只安装生产环境依赖\n\n```\nyarn install --production\n```\n\n\n\n### 【7】发布包\n\n```shell\nyarn publish\n```\n\n\n\n### 【8】运行脚本\n\n> 用来执行在 package.json 中 scripts 属性下定义的脚本\n\n```shell\nyarn run \n```\n\n\n\n### 【9】显示某个包的信息\n\n>  可以用来查看某个模块的最新版本信息\n\n```shell\nyarn info [package] \n```\n\n\n\n### 【10】缓存\n\n```shell\nyarn cache\nyarn cache list \u002F\u002F 列出已缓存的每个包\nyarn cache dir \u002F\u002F 返回全局缓存位置\nyarn cache clean \u002F\u002F 清除缓存\n```\n\n\n\n\n\n## yarn 和 npm 命令对比\n\n| NPM                          | Yarn                      | 说明                            |\n| ---------------------------- | ------------------------- | ------------------------------- |\n| npm init                     | yarn init                 | 初始化某个项目                  |\n| npm install\u002Flink             | yarn install\u002Flink         | 默认安装依赖                    |\n| npm install taco --save      | yarn add taco             | 安装某个依赖并默认保存到package |\n| npm uninstall taco --save    | yarn remove taco          | 移除某个依赖                    |\n| npm install taco --save -dev | yarn add taco -dev        | 安装某个开发时的依赖            |\n| npm update taco --save       | yarn upgrade taco         | 更新某个依赖项目                |\n| npm install taco --global    | yarn global add taco      | 安装某个全局依赖项目            |\n| npm publish\u002Flogin\u002Flogout     | yarn publish\u002Flogin\u002Flogout | 发布\u002F登录\u002F退出                  |\n| npm run\u002Ftest                 | yarn run\u002Ftest             | 运行某个命令                    |\n\n\n\n##  临时修改（只生效一次）\n\n```cpp\nyarn save 包的名字 --registry https:\u002F\u002Fregistry.npmmirror.com\n```\n\n\n\n##  设置yarn的配置项（全局配置）\n\n- 查看yarn源的当前地址\n\n```csharp\nyarn config get registry\n```\n\n- 设置淘宝镜像\n\n```cpp\nyarn config set registry https:\u002F\u002Fregistry.npmmirror.com\n```\n\n\n\n## yarn 设置代理\n\n查看代理\n\n```shell\nyarn config list\n```\n\n设置\n\n```shell\nyarn config set proxy  http:\u002F\u002F127.0.0.1:7890\nyarn confit set https-proxy http:\u002F\u002F127.0.0.1:7890\n```\n\n取消\n\n```shell\nyarn config delete proxy\nyarn config delete https-proxy\n```","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F9da5a17be907b7c26c48c04331eaa8de.png",976,"2022-09-24T03:56:20.000Z","2026-05-24T20:19:08.000Z",{"id":42,"name":43,"slug":43},"d10456a5-e649-4741-a38f-f07f266ce5f2","开发环境",{"id":28,"name":29,"avatar":19},[46],{"id":4,"name":5,"slug":5},{"id":48,"title":49,"slug":49,"content":50,"excerpt":49,"coverImage":51,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":52,"publishedAt":53,"createdAt":53,"updatedAt":54,"category":55,"author":58,"tags":59},"93413af1-748f-4ebf-8c7b-8ce0815d2faf","npm更新依赖","## 全局安装依赖 npm-check\n```language\nnpm install npm-check -g\n```\n\n## 查看可更新包信息\n```language\nnpm-check\n```\n\n## 选择并更新相应的依赖包【空格选择、enter更新】\n```language\nnpm-check -u\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F1f84cb07025b657c2ddc599cfa50984f.jpeg",717,"2022-08-20T10:53:00.000Z","2026-05-25T05:35:06.000Z",{"id":56,"name":57,"slug":57},"4ea3d8af-9cc3-49bb-a9cd-34dbcdc3bd85","构建工具",{"id":28,"name":29,"avatar":19},[60],{"id":4,"name":5,"slug":5},{"id":62,"title":63,"slug":64,"content":65,"excerpt":66,"coverImage":67,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":68,"publishedAt":69,"createdAt":69,"updatedAt":70,"category":71,"author":72,"tags":73},"b160f72d-9ed2-426f-aec1-9ca0a3d3224b","nvm-desktop、Nvm、Nrm","nvm-desktop-nvm-nrm","## nvm-desktop 介绍 （推荐使用）\n> node可视化管理，可以方便的在同一台设备上进行多个node版本之间切换，并且可以同时为不同项目使用不同node版本\n\n## 下载链接  (win电脑下载 nvm-desktop_Setup_win_版本号.exe)\n> https:\u002F\u002Fgithub.com\u002F1111mp\u002Fnvm-desktop\u002Freleases\n\n## 安装好打开软件\n\n![](https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F0454964d49cf32167c94436e14e544dd.png)\n![](https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F1b048865703bec19d01dc19a731f338a.png)\n![](https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F0299f617473b518b8d055b067d677fd6.png)\n\n\n\n\n\n## NVM 介绍   （推荐使用nvm-desktop）\n\n> 可以方便的在同一台设备上进行多个node版本之间切换\n\n## 先卸载干净之前的 node,然后下载 nvm-setup.zip\n\nhttps:\u002F\u002Fgithub.com\u002Fcoreybutler\u002Fnvm-windows\u002Freleases\n\n## nvm 安装\n\n### 新建相应的目录\n\n- 第一个目录：安装到 D:\\NodeNvm 目录\n\n- 第二个目录：安装到 D:\\NodeNvm\\\node 目录\n\n\n\n## 配置环境变量(安装完，看看有没有配置了环境变量，没有就配置，一般安装软件的时候，会自动配置环境变量)\n\n```shell\nNVM_HOME： D:\\NodeNvm\\\nvm\nNVM_SYMLINK ：D:\\NodeNvm\\\node\n```\n\n\n\n## nvm常用命令\n\n### 查看 nvm 安装版本\n\n```shell\nnvm -v\n```\n\n### 查看可以安装的版本\n\n```shell\nnvm list  available  \n```\n\n\n\n\n### 安装 node 特定版本(示例为安装16.15.0版本，具体版本号可以查看node官网，建议安装TLS版本系列)\n\n```shell\nnvm install 16.18.0\n```\n\n\n\n### 切换 node 版本\n\n```shell\nnvm use 16.18.0\n```\n\n\n\n### 查看安装的全部 node 版本\n\n```shell\nnvm ls\n```\n\n\n\n### 卸载 node 版本\n\n```shell\nnvm uninstall 16.18.0\n```\n\n\n\n\n\n\n\n### nvm 安装node版本下载慢的问题，D:\\NodeNvm\\\nvm更改settings.txt文件，加入下面配置\n\n```json\narch: 64\nproxy: none\nnode_mirror: http:\u002F\u002Fnpmmirror.com\u002Fmirrors\u002Fnode\u002F\nnpm_mirror: https:\u002F\u002Fnpmmirror.com\u002Fmirrors\u002Fnpm\u002F\n```\n\n\n\n### cli.js文件报错（根据终端报错信息，找到cli.js文件路径）\n\n```shell\n\u002F\u002Fconst NRMRC = path.join(process.env.HOME, '.nrmrc');\nconst NRMRC = path.join(process.env[(process.platform == 'win32') ? 'USERPROFILE' : 'HOME'], '.nrmrc');\n```\n\n### PowerShell 执行权限问题\n> Set-ExecutionPolicy：Windows PowerShell已成功更新您的执行策略，但该设置已被置于更具体的范围内定义的策略覆盖。由于此覆盖，您的shell将保留自己的“不受限制”的当前有效执行策略。 “ Get-ExecutionPolicy -List”可查看您的执行策略设置。有关详细信息，请参见“ Get-Help Set-ExecutionPolicy”。其中位置行：1字符：20\n\n#### 解决方法：\n用管理员身份运行 PowerShell，在命令行下执行下面 2 条命令即可（全部选择Y）,重启 PowerShell\n```shell\nSet-ExecutionPolicy \\\"RemoteSigned\\\" -Scope Process -Confirm:$false\n```\n\n```shell\nSet-ExecutionPolicy \\\"RemoteSigned\\\" -Scope CurrentUser -Confirm:$false\n```\n\n\n\n# nrm 命令\n> 多下载源管理工具\n\n### 查看当前下载源\n```shell\nnpm config get registry\n```\n\n\n### 安装nrm\n\n```shell\nnpm i -g nrm\n```\n\n### 查看所有的支持源\n\n```shell\nnrm ls\n```\n\n### 切换指定的源 (示例为切换为淘宝源)\n\n```shell\nnrm use  taobao\n```\n\n###  测试源速度\n\n```shell\nnrm test\n```\n\n## 不使用nrm来切换源\n\n###  查看当前使用的源\n\n```shell\nnpm config get registry\n```\n\n###  设置一个源\n\n#### 淘宝源\n```shell\nnpm config set registry https:\u002F\u002Fregistry.npmmirror.com\u002F\n```\n\n#### 腾讯云\n```shell\nnpm config set registry https:\u002F\u002Fmirrors.cloud.tencent.com\u002Fnpm\u002F\n```\n\n#### 阿里云\n```shell\nnpm config set registry https:\u002F\u002Fnpm.aliyun.com\n```\n\n#### 华为云\n```shell\nnpm config set registry https:\u002F\u002Fmirrors.huaweicloud.com\u002Frepository\u002Fnpm\u002F\n```\n\n#### npm官方\n```shell\nnpm config set registry https:\u002F\u002Fregistry.npmjs.org\u002F\n```\n\n### 安装包使用特定源\n\n```shell\nnpm install --registry=https:\u002F\u002Fregistry.npmmirror.com\u002F\n```\n\n### 查看当前全局包\n```language\n npm config get prefix\n```\n\n\n### 设置全局包\n```language\nnpm config set prefix \\\"D:\\NodeNvm\\\node\\\"\nnpm config set cache \\\"D:\\NodeNvm\\\node\\\" \n```\n\n","node版本管理器、下载源管理","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F0a1ce4c83d6c9c54896ca641b92436f4.webp",2273,"2022-05-24T01:58:21.000Z","2026-05-25T08:31:46.000Z",{"id":42,"name":43,"slug":43},{"id":28,"name":29,"avatar":19},[74],{"id":4,"name":5,"slug":5},4,1,10,{"categories":79,"tags":157,"postCount":338,"tagCount":339,"hotPosts":340},[80,87,93,100,104,110,117,121,128,130,134,139,142,147,151],{"id":81,"name":82,"slug":83,"description":84,"sortOrder":85,"createdAt":86,"updatedAt":86,"postCount":76},"e8d0bd45-d10c-46d3-8afb-0c072df7f8a7","技术","tech","技术文章",0,"2026-06-27T04:18:37.371Z",{"id":88,"name":89,"slug":90,"description":89,"sortOrder":76,"createdAt":91,"updatedAt":7,"postCount":92},"15ac46ad-edf7-4435-9a64-ff78117d58c5","Vue3 生态","vue3-生态","2022-05-21T08:05:39.000Z",6,{"id":94,"name":95,"slug":96,"description":95,"sortOrder":97,"createdAt":98,"updatedAt":7,"postCount":99},"11d4d397-685c-4180-a7b3-9b0e3a1e411e","Css","css",2,"2022-05-23T07:19:37.000Z",9,{"id":42,"name":43,"slug":43,"description":43,"sortOrder":101,"createdAt":102,"updatedAt":7,"postCount":103},3,"2022-05-24T01:52:41.000Z",13,{"id":105,"name":106,"slug":107,"description":106,"sortOrder":75,"createdAt":108,"updatedAt":7,"postCount":109},"5ed5cc62-43ea-49a2-b0b2-38bc7aae52a0","Vue3","vue3","2022-05-24T01:55:05.000Z",8,{"id":111,"name":112,"slug":113,"description":112,"sortOrder":114,"createdAt":115,"updatedAt":7,"postCount":116},"da130ba9-d4f4-49f3-aa0f-149078097ef0","JavaScript","javascript",5,"2022-05-24T02:22:57.000Z",18,{"id":118,"name":119,"slug":119,"description":119,"sortOrder":92,"createdAt":120,"updatedAt":7,"postCount":76},"d8cbe380-54b3-4a61-a12d-5438c2918574","限时优惠","2022-05-25T07:18:03.000Z",{"id":122,"name":123,"slug":124,"description":123,"sortOrder":125,"createdAt":126,"updatedAt":7,"postCount":127},"e0f3b8d8-cfe7-41fb-802b-a79699d95968","JavaScript插件","javascript插件",7,"2022-06-01T14:08:31.000Z",16,{"id":56,"name":57,"slug":57,"description":57,"sortOrder":109,"createdAt":129,"updatedAt":7,"postCount":92},"2022-06-02T07:28:13.000Z",{"id":131,"name":132,"slug":132,"description":132,"sortOrder":99,"createdAt":133,"updatedAt":7,"postCount":109},"9ed9827c-9cbb-42da-80e4-d04c7fdba886","开发工具","2022-06-21T03:35:05.000Z",{"id":135,"name":136,"slug":137,"description":136,"sortOrder":77,"createdAt":138,"updatedAt":7,"postCount":114},"6b9179c3-17b2-43ff-a431-a03d6eb32d89","Vue2 生态","vue2-生态","2022-07-16T13:14:29.000Z",{"id":24,"name":25,"slug":26,"description":25,"sortOrder":140,"createdAt":141,"updatedAt":7,"postCount":114},11,"2022-07-16T13:15:39.000Z",{"id":143,"name":144,"slug":144,"description":144,"sortOrder":145,"createdAt":146,"updatedAt":7,"postCount":97},"2b696c16-48ef-403b-a88b-6e57cfc79596","开发问题",12,"2022-07-16T14:06:54.000Z",{"id":148,"name":149,"slug":149,"description":149,"sortOrder":103,"createdAt":150,"updatedAt":7,"postCount":76},"c0f0561e-a47a-4ecd-8caa-cc1df2315d57","算法","2022-07-16T14:22:34.000Z",{"id":152,"name":153,"slug":154,"description":153,"sortOrder":155,"createdAt":156,"updatedAt":7,"postCount":101},"a629c1f7-29f1-439e-be3c-29670b17ba20","Vue2","vue2",15,"2022-07-16T14:41:51.000Z",[158,164,169,172,177,182,186,190,195,200,205,209,210,215,219,223,228,233,238,243,247,251,255,257,261,266,271,274,277,280,283,286,290,293,295,297,300,304,307,311,315,318,321,323,326,328,332,335],{"id":159,"name":160,"slug":161,"createdAt":162,"updatedAt":163},"076bd8b9-293e-45cb-9dc3-e162007ca474","Axios","axios","2022-06-05T07:41:56.000Z","2025-12-30T07:26:21.000Z",{"id":165,"name":166,"slug":167,"createdAt":168,"updatedAt":7},"2aa7f6d0-1fac-4ed1-b9bb-f3afc813f42c","Axure","axure","2022-06-21T03:35:15.000Z",{"id":170,"name":95,"slug":96,"createdAt":171,"updatedAt":7},"b084ddd8-09be-4e57-98f0-cf4e376aecd7","2022-05-21T09:59:55.000Z",{"id":173,"name":174,"slug":175,"createdAt":176,"updatedAt":7},"78a62bff-ff77-4878-8c25-3e6aae18c668","Docker","docker","2022-07-16T14:34:37.000Z",{"id":178,"name":179,"slug":180,"createdAt":181,"updatedAt":7},"2de16806-ef3f-4e54-a259-d1e1e182468c","Git","git","2022-07-16T14:25:15.000Z",{"id":183,"name":184,"slug":185,"createdAt":171,"updatedAt":7},"994cc226-578b-4a72-a57e-a47a63d2793e","JavaScript生态","javascript生态",{"id":187,"name":188,"slug":189,"createdAt":171,"updatedAt":7},"5086e93c-23b9-43d3-9643-cc87f0e9ee94","JenKins","jenkins",{"id":191,"name":192,"slug":193,"createdAt":194,"updatedAt":7},"b73007a8-bb5c-42a8-9fd9-163033a5b45d","Linux","linux","2022-07-16T14:40:17.000Z",{"id":196,"name":197,"slug":198,"createdAt":199,"updatedAt":7},"0b658b92-dd6b-4db3-a398-9f6d69950a02","Markdown","markdown","2022-07-16T14:39:25.000Z",{"id":201,"name":202,"slug":203,"createdAt":204,"updatedAt":7},"ab034d3a-6e5b-4db5-a2dc-faf4ccbb63f5","Nest","nest","2022-07-16T13:15:49.000Z",{"id":206,"name":207,"slug":208,"createdAt":6,"updatedAt":7},"52c41978-da06-4962-9636-45bbaeedda80","Nginx","nginx",{"id":4,"name":5,"slug":5,"createdAt":6,"updatedAt":7},{"id":211,"name":212,"slug":213,"createdAt":214,"updatedAt":7},"a4370d78-70e1-4073-a8f6-3dc5d81fd8fd","Nuxt","nuxt","2022-06-01T13:07:07.000Z",{"id":216,"name":217,"slug":218,"createdAt":171,"updatedAt":7},"d232e01f-048e-4151-8a0a-fff9561f946f","Pinia","pinia",{"id":220,"name":221,"slug":222,"createdAt":6,"updatedAt":7},"14e9ab02-b0bb-4c85-8604-fe6f1f0f33cd","Pnpm","pnpm",{"id":224,"name":225,"slug":226,"createdAt":227,"updatedAt":227},"399d1d38-cc0d-43ce-8baf-c769447a2ebd","React生态","react生态","2023-02-21T02:03:09.000Z",{"id":229,"name":230,"slug":231,"createdAt":232,"updatedAt":7},"c95bbe84-bdd0-410a-86a9-e87958c55f4f","Redis","redis","2022-10-05T05:14:14.000Z",{"id":234,"name":235,"slug":236,"createdAt":237,"updatedAt":7},"6d05f9df-e116-450f-af57-85ed710c4870","Swiper","swiper","2022-06-01T14:08:46.000Z",{"id":239,"name":240,"slug":241,"createdAt":242,"updatedAt":7},"66f3aeb0-84ef-45f6-a43a-944eefc9895a","Vite","vite","2022-06-02T07:28:24.000Z",{"id":244,"name":245,"slug":246,"createdAt":171,"updatedAt":7},"bf5b94d3-090b-4098-a03c-4bc69781fb2d","Vue","vue",{"id":248,"name":249,"slug":250,"createdAt":6,"updatedAt":7},"2f7fb1be-b9c5-4606-b54f-e9f66f2653b2","Vue-Router","vue-router",{"id":252,"name":253,"slug":254,"createdAt":171,"updatedAt":7},"2fef3b91-1c1c-4ae8-b2c1-0e04b4f9b3a2","Vue2生态","vue2生态",{"id":256,"name":106,"slug":107,"createdAt":171,"updatedAt":7},"62b94c93-724f-488d-8fc5-0449971d9204",{"id":258,"name":259,"slug":260,"createdAt":171,"updatedAt":7},"20bff9cd-7848-4c16-8775-42cf12b44b30","Vue3生态","vue3生态",{"id":262,"name":263,"slug":264,"createdAt":265,"updatedAt":7},"c807b2c6-cb12-4409-a1f1-6bea9f330a6b","Vuex","vuex","2022-07-16T13:14:59.000Z",{"id":267,"name":268,"slug":269,"createdAt":270,"updatedAt":7},"5782dff5-2ea2-4427-9696-d4363a7fd5bc","Webpack","webpack","2022-07-16T14:33:41.000Z",{"id":272,"name":273,"slug":273,"createdAt":171,"updatedAt":7},"d0aa41f4-68f8-48d4-a4ed-3a503ea90451","下载",{"id":275,"name":276,"slug":276,"createdAt":171,"updatedAt":7},"a046060c-39ef-474a-8c85-2546aca0e2e5","代码片段",{"id":278,"name":279,"slug":279,"createdAt":171,"updatedAt":7},"fee73435-b2be-4b55-85b1-d133ea96aea4","伪元素",{"id":281,"name":282,"slug":282,"createdAt":171,"updatedAt":7},"436bd369-8c57-4869-8827-e88e50e5e0ab","伪类",{"id":284,"name":285,"slug":285,"createdAt":171,"updatedAt":7},"4c6be544-8a00-4445-92a3-e3dcbaf6142e","动画",{"id":287,"name":288,"slug":288,"createdAt":289,"updatedAt":7},"9321a12e-ea72-49a9-a32d-5566149f812f","图片压缩","2022-08-02T00:37:47.000Z",{"id":291,"name":292,"slug":292,"createdAt":6,"updatedAt":7},"512b16fb-576a-4397-a7c5-dd20e6a8f9ca","布局",{"id":294,"name":132,"slug":132,"createdAt":171,"updatedAt":7},"f32faa96-f2ec-45c6-9a17-2c76062edcb0",{"id":296,"name":43,"slug":43,"createdAt":171,"updatedAt":7},"3c46ed3f-6d6b-4f91-bcb3-af5112860bf5",{"id":298,"name":299,"slug":299,"createdAt":171,"updatedAt":7},"dbfc086a-73a6-4560-814d-593acb61cf98","性能优化",{"id":301,"name":302,"slug":302,"createdAt":303,"updatedAt":7},"1831cd06-0d6b-48f7-94fa-324782fe23cb","拖拽","2022-07-28T12:39:13.000Z",{"id":305,"name":306,"slug":306,"createdAt":6,"updatedAt":7},"9a74300d-06f7-46d0-80d9-8fe67ec0539b","数组",{"id":308,"name":309,"slug":309,"createdAt":310,"updatedAt":7},"19ac8998-7e0a-459b-9702-bb1adca70e8c","文本复制","2022-07-17T01:54:45.000Z",{"id":312,"name":313,"slug":313,"createdAt":314,"updatedAt":7},"5ff33473-71a4-4e02-8c82-f9ea369a768f","时间","2022-07-17T01:51:12.000Z",{"id":316,"name":317,"slug":317,"createdAt":171,"updatedAt":7},"aa47ca4d-d3f6-4cac-b495-2c67c9592c36","最新优惠",{"id":319,"name":320,"slug":320,"createdAt":6,"updatedAt":7},"f6766d54-54fc-405e-932d-b7d550559125","服务器",{"id":322,"name":57,"slug":57,"createdAt":171,"updatedAt":7},"d856559a-03ff-40b4-980d-3f272b998c3c",{"id":324,"name":325,"slug":325,"createdAt":171,"updatedAt":7},"692d5d68-b188-4e5c-aca8-65d0229399a1","渐变",{"id":327,"name":149,"slug":149,"createdAt":171,"updatedAt":7},"38e1fd6b-d7c6-4d62-bf70-7bacc175bea9",{"id":329,"name":330,"slug":330,"createdAt":331,"updatedAt":7},"be7b10bc-49eb-4a03-bea7-ceb915d500fe","规范","2022-07-16T14:41:06.000Z",{"id":333,"name":334,"slug":334,"createdAt":6,"updatedAt":7},"b42e2916-ad62-4b8a-a863-cd8c19a829de","面试",{"id":336,"name":337,"slug":337,"createdAt":6,"updatedAt":7},"7069add9-b636-44f1-9cd4-ea3a6d2b85d3","面试题",104,48,[341,353,365,378,391],{"id":342,"title":343,"slug":343,"content":344,"excerpt":343,"coverImage":345,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":346,"publishedAt":347,"createdAt":347,"updatedAt":348,"category":349,"author":350,"tags":351},"a1bd1f49-6f6d-4fea-9789-b5636e19a6b3","uni-app瀑布流","## 实现思路\n> 获取父组件的列表数组，watch监听数组长度变化，截取后面新的数据，创建两个左右数组，比较左右dom的长度，哪个短，就push一条数据进去，源数组删除一条数据。利用img的load（加载成功）和error方法（加载失败），触发数组的push，实现瀑布流\n\n## 代码实现\n\n```language\n\u003Ctemplate>\n    \u003Cview class=\\\"waterfall\\\">\n        \u003Cview class=\\\"waterfall_left\\\">\n            \u003Cview class=\\\"waterfall_list\\\" v-for=\\\"(item, index) in leftList\\\" :key=\\\"index\\\">\n                \u003CSearch\n                    :name=\\\"item.name\\\"\n                    :image=\\\"item.src\\\"\n                    :label=\\\"item.label\\\"\n                    :item=\\\"item\\\"\n                    @considerPush=\\\"considerPush\\\"\n                >\n                \u003C\u002FSearch>\n            \u003C\u002Fview>\n        \u003C\u002Fview>\n        \u003Cview class=\\\"waterfall_right\\\">\n            \u003Cview class=\\\"waterfall_list\\\" v-for=\\\"(item, index) in rightList\\\" :key=\\\"index\\\">\n                \u003CSearch\n                    :name=\\\"item.name\\\"\n                    :image=\\\"item.src\\\"\n                    :label=\\\"item.label\\\"\n                    :item=\\\"item\\\"\n                    @considerPush=\\\"considerPush\\\"\n                >\n                \u003C\u002FSearch>\n            \u003C\u002Fview>\n        \u003C\u002Fview>\n    \u003C\u002Fview>\n\u003C\u002Ftemplate>\n\n\u003Cscript>\nimport Search from '@\u002Fcomponents\u002Fsearch\u002Fsearch.vue';\nexport default {\n    components: { Search },\n    props: {\n        list: {\n            type: Array,\n            default: () => []\n        }\n    },\n    data() {\n        return {\n            \u002F\u002F 左侧列表\n            leftList: [],\n            \u002F\u002F 右侧列表\n            rightList: [],\n            \u002F\u002F 组件数据备份\n            newList: [],\n            \u002F\u002F默认请求数,主要为了正常排序\n            interceptNumber: 10\n        };\n    },\n    created() {\n        this.touchOff(); \u002F\u002F 触发排列\n    },\n    mounted() {},\n    watch: {\n        list(newValue, oldValue) {\n            this.interceptNumber = newValue.length - oldValue.length;\n            this.touchOff();\n        }\n    },\n    computed: {},\n    methods: {\n        \u002F\u002F 触发重新排列\n        touchOff() {\n            this.newList = [...this.list.slice(-this.interceptNumber)];\n            if (this.newList.length !== 0) {\n                this.leftList.push(this.newList.shift()); \u002F\u002F触发排列\n            }\n        },\n        \u002F\u002F 计算排列\n        considerPush() {\n            this.$nextTick(() => {\n                if (this.newList.length == 0) return; \u002F\u002F没有数据了\n                let leftH = 0;\n                let rightH = 0; \u002F\u002F左右高度\n                let query = uni.createSelectorQuery().in(this);\n                query.selectAll('.waterfall_left').boundingClientRect();\n                query.selectAll('.waterfall_right').boundingClientRect();\n                query.exec(res => {\n                    leftH = res[0].length != 0 ? res[0][0].height : 0; \u002F\u002F防止查询不到做个处理\n                    rightH = res[1].length != 0 ? res[1][0].height : 0;\n                    if (leftH == rightH || leftH \u003C rightH) {\n                        \u002F\u002F 相等 || 左边小\n                        this.leftList.push(this.newList.shift());\n                    } else {\n                        \u002F\u002F 右边小\n                        this.rightList.push(this.newList.shift());\n                    }\n\n                    \u002F\u002F console.log('左右高度：', leftH, rightH, leftH == rightH || leftH \u003C rightH);\n                });\n            });\n        }\n    }\n};\n\u003C\u002Fscript>\n\n\u003Cstyle scoped lang=\\\"scss\\\">\n.waterfall {\n    display: flex;\n    align-items: flex-start;\n    justify-content: flex-start;\n    .waterfall_left {\n        flex: 1;\n    }\n\n    .waterfall_right {\n        flex: 1;\n    }\n}\n\u003C\u002Fstyle>\n\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F7d4fa8d1d2775177b882a4656e3a5ed5.png",1817,"2022-11-22T07:54:41.000Z","2026-06-26T10:25:05.932Z",{"id":111,"name":112,"slug":113},{"id":28,"name":29,"avatar":19},[352],{"id":183,"name":184,"slug":185},{"id":354,"title":355,"slug":355,"content":356,"excerpt":355,"coverImage":357,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":358,"publishedAt":359,"createdAt":359,"updatedAt":360,"category":361,"author":362,"tags":363},"b2c46bf6-d971-4cce-b21b-052dbea8e8a2","v-html使用img点击实现放大效果","## 代码实现\n```js\n\u002F**\n * JS获取html代码中所有的图片地址\n * @param htmlstr\n * @returns arr 数组\n *\u002F\n\nexport function getimgsrc(htmlstr) {\n    let reg = \u002F\u003Cimg.+?src=('|\\\")?([^'\\\"]+)('|\\\")?(?:\\s+|>)\u002Fg;\n    let arr = [];\n    let tem = 0;\n    \u002F\u002Feslint-disable-next-line\n    while ((tem = reg.exec(htmlstr))) {\n        arr.push(tem[2]); \u002F\u002F eslint-disable-line\n    }\n\n    return arr;\n}\n\n```\n\n\n\n```vue\n\u003Ctemplate>\n    \u003Cdiv class=\\\"image-expansion\\\" :class=\\\"classArr\\\">\n        \u003Cdiv @click.stop=\\\"hanldeImage($event)\\\" v-html=\\\"formatHtmlData\\\">\u003C\u002Fdiv>\n\n        \u003Cel-image-viewer\n            v-if=\\\"imgPreviewUrl\\\"\n            :initial-index=\\\"subscript\\\"\n            :src=\\\"imgPreviewUrl\\\"\n            :on-close=\\\"closeViewer\\\"\n            :url-list=\\\"imgList\\\"\n        >\u003C\u002Fel-image-viewer>\n    \u003C\u002Fdiv>\n\u003C\u002Ftemplate>\n\n\u003Cscript>\nimport { getimgsrc } from '..\u002F..\u002Futils\u002Fgetimgsrc';\nimport ElImageViewer from 'element-ui\u002Fpackages\u002Fimage\u002Fsrc\u002Fimage-viewer';\nexport default {\n    components: {\n        ElImageViewer\n    },\n    props: {\n        htmlData: {\n            type: String,\n            default: () => {\n                return '';\n            }\n        },\n        classArr: {\n            type: Array,\n            default: () => {\n                return ['min'];\n            }\n        },\n\n        isArticle: {\n            type: Boolean,\n            default: () => {\n                return false;\n            }\n        }\n    },\n    data() {\n        return {\n            imgList: [],\n            formatHtmlData: '',\n            imgPreviewUrl: '',\n            subscript: 0\n        };\n    },\n    computed: {},\n\n    watch: {\n        \u002F\u002F监听数据，防止数据不更新\n        htmlData: {\n            handler(newName, oldName) {\n                \u002F\u002F判断是否为文章\n                if (this.isArticle) {\n                    newName ? (this.formatHtmlData = newName.replace(\u002F(\u003C([^>]+)>)\u002Fgi, '').replace(\u002F[\\\r\\\n]\u002Fg, '')) : '';\n                } else {\n                    \u002F\u002F剔除strong和p标签\n                    newName ? (this.formatHtmlData = newName.replace(\u002F(\u003C\\\u002F?strong.*?>)|(\u003C\\\u002F?p.*?>)\u002Fg, '')) : '';\n\n                    \u002F\u002F获取html全部图片，push成图片数组\n                    this.imgList = Object.values(getimgsrc(this.formatHtmlData));\n                    \u002F\u002F获取图片下标\n                    let subscript = this.imgList.indexOf(this.imgPreviewUrl);\n                    this.subscript = subscript > -1 ? subscript : 0;\n                }\n            },\n\n            immediate: true\n        }\n    },\n\n    mounted() {},\n\n    methods: {\n        \u002F\u002F监听点击事件\n        hanldeImage(event) {\n            if (event.target.nodeName === 'IMG' || event.target.nodeName === 'img') {\n                \u002F\u002F获取点击的图片url,decodeURIComponent转码一下，防禁url转码\n                this.imgPreviewUrl = decodeURIComponent(event.target.currentSrc);\n\n                \u002F\u002F获取图片下标\n                let subscript = this.imgList.indexOf(this.imgPreviewUrl);\n                this.subscript = subscript > -1 ? subscript : 0;\n\n                \u002F\u002F禁止遮罩层后面的内容滚动\n                document.documentElement.style.overflowY = 'hidden';\n            } else {\n                this.$emit('goDetail');\n            }\n        },\n\n        \u002F\u002F关闭弹框\n        closeViewer() {\n            this.imgPreviewUrl = '';\n            \u002F\u002F恢复遮罩层后面的内容滚动\n            document.documentElement.style.overflowY = 'auto';\n        }\n    }\n};\n\u003C\u002Fscript>\n\n\u003Cstyle lang=\\\"scss\\\" scoped>\n.image-expansion {\n}\n\n.min {\n    \u002Fdeep\u002F img {\n        cursor: pointer;\n        height: 28px;\n        padding: 0 10px 3px;\n    }\n}\n\n.max {\n    \u002Fdeep\u002F img {\n        cursor: pointer;\n    }\n}\n\n.class1 {\n    \u002Fdeep\u002F div {\n        font-size: 15px;\n        font-family: Microsoft YaHei;\n        font-weight: 400;\n        color: #888888;\n        line-height: 30px;\n    }\n}\n\u003C\u002Fstyle>\n\n\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002Fc77c3fb113d1ab2f67e7afba1ca33b95.png",1571,"2023-01-10T07:22:29.000Z","2026-06-26T10:25:07.650Z",{"id":135,"name":136,"slug":137},{"id":28,"name":29,"avatar":19},[364],{"id":287,"name":288,"slug":288},{"id":366,"title":367,"slug":368,"content":369,"excerpt":367,"coverImage":370,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":371,"publishedAt":372,"createdAt":372,"updatedAt":373,"category":374,"author":375,"tags":376},"9f33b49b-0785-4404-9a4e-d85937e7fc92","在 vue3 中优雅的使用 jsx\u002Ftsx","在-vue3-中优雅的使用-jsx-tsx","## 安装插件（@vitejs\u002Fplugin-vue-jsx）\n```shell\npnpm add @vitejs\u002Fplugin-vue-jsx -D\n```\n\n## 配置vite.config.ts\n```ts\nimport vueJsx from \\\"@vitejs\u002Fplugin-vue-jsx\\\";\n\nexport default defineConfig({\n  plugins: [\n    vueJsx(),\n  ]\n})\n```\n\n## 插值\n```language\n\u002F\u002F vue3模板语法\n\u003Cspan>{{ a + b }}\u003C\u002Fspan>\n\n\u002F\u002F jsx\u002Ftsx\n\u003Cspan>{ a + b }\u003C\u002Fspan>\n```\n\n\n## class与style 绑定\n\n```ts\n\u002F\u002F 模板字符串\n\u003Cdiv className={`header ${ isBg ? 'headerBg' : '' }`}>header\u003C\u002Fdiv>\n\u002F\u002F数组\n\u003Cdiv class={ [ 'header', isBg && 'headerBg' ] } >header\u003C\u002Fdiv>\n```\n\n```ts\nconst color = 'red'\nconst element = \u003Csapn style={{ color, fontSize: '16px' }}>style\u003C\u002Fsapn>\n```\n\n## 条件渲染\n\n```ts\n   setup() {\n       const isShow = false\n       const element = () => {\n           if (isShow) {\n               return \u003Cspan>我是if\u003C\u002Fspan>\n           } else {\n               return \u003Cspan>我是else\u003C\u002Fspan>\n           }\n       }\n       return () => (\n           \u003Cdiv>\n               \u003Cspan v-show={isShow}>我是v-show\u003C\u002Fspan>\n               {\n                   element()\n               }\n               {\n                   isShow ? \u003Cp>我是三目1\u003C\u002Fp> : \u003Cp>我是三目2\u003C\u002Fp>\n               }\n           \u003Cdiv>\n       )\n   }\n```\n\n## 列表渲染\n```language\nsetup() {\n   const listData = [\n       {name: 'Tom', age: 18},\n       {name: 'Jim', age: 20},\n       {name: 'Lucy', age: 16}\n   ]\n   return () => (\n       \u003Cdiv>\n           \u003Cdiv class={'box'}>\n               \u003Cspan>姓名\u003C\u002Fspan>\n               \u003Cspan>年龄\u003C\u002Fspan>\n           \u003C\u002Fdiv>\n           {\n               prop.listData.map(item => {\n                   return \u003Cdiv class={'box'}>\n                       \u003Cspan>{item.name}\u003C\u002Fspan>\n                       \u003Cspan>{item.age}\u003C\u002Fspan>\n                   \u003C\u002Fdiv>\n               })\n           }\n       \u003C\u002Fdiv>\n   )\n}\n\n```\n\n## 事件处理\n\n```language\nsetup() {\n    const clickBox = val => {\n        console.log(val)\n    }\n    return () => (\n        \u003Cdiv class={'box1'} onClick={() => clickBox('box1')}>\n            \u003Cspan>我是box1\u003C\u002Fspan>\n            \u003Cdiv class={'box2'} onClick={() => clickBox('box2')}>\n                \u003Cspan>我是box2\u003C\u002Fspan>\n                \u003Cdiv class={'box3'} onClick={withModifiers(() => clickBox('box3'), ['stop'])}>我是box3\u003C\u002Fdiv>\n            \u003C\u002Fdiv>\n        \u003C\u002Fdiv>\n    )\n}\n```\n\n## v-model\n\n```ts\n\u002F\u002F 正常写法\n\u003Cinput v-model=\\\"value\\\" \u002F> \u002F\u002F vue\n\u003Cinput v-model={value} \u002F> \u002F\u002F jsx\n\n\u002F\u002F 指定绑定值写法\n\u003Cinput v-model:modelValue=\\\"value\\\" \u002F> \u002F\u002F vue\n\u003Cinput v-model={[value,'modelValue']} \u002F> \u002F\u002F jsx\n\n\u002F\u002F 修饰符写法\n\u003Cinput v-model:modelValue.trim=\\\"value\\\" \u002F> \u002F\u002F vue\n\u003Cinput v-model={[value,'modelValue',['trim']]} \u002F> \u002F\u002F jsx\n```\n\n## slot插槽\n\n### 定义插槽\n```ts\nimport { renderSlot } from \\\"vue\\\"\nexport default defineComponent({\n    \u002F\u002F 从ctx中解构出来 slots\n    setup(props, { slots }) {\n        return () => (\n            \u003Cdiv>\n                { renderSlot(slots, 'default') }\n                { slots.title?.() }\n            \u003C\u002Fdiv>\n        )\n    }\n})\n\n```\n\n### 使用插槽\n\n```ts\nimport Vslot from '.\u002FslotTem'\nexport default defineComponent({\n    setup() {\n        return () => (\n            \u003Cdiv class={'box'}>\n                \u003CVslot v-slots={{\n                    title: () => {\n                        return \u003Cp>我是title插槽\u003C\u002Fp>\n                    },\n                    default: () => {\n                        return \u003Cp>我是default插槽\u003C\u002Fp>\n                    }\n                }} \u002F>\n            \u003C\u002Fdiv>\n        )\n    }\n})\n\n```\n\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F3e4cb0d3df611ee3f57b8ed503e1015e.png",1391,"2023-04-19T09:23:27.000Z","2026-06-26T09:54:47.369Z",{"id":105,"name":106,"slug":107},{"id":28,"name":29,"avatar":19},[377],{"id":256,"name":106,"slug":107},{"id":379,"title":380,"slug":381,"content":382,"excerpt":380,"coverImage":383,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":384,"publishedAt":385,"createdAt":385,"updatedAt":386,"category":387,"author":388,"tags":389},"1dcdd755-0e46-45a3-8998-9a213fd3fcd5","Vue3 导入导出Excel","vue3-导入导出excel","## 安装\n```shell\npnpm add -S XLSX\n```\n\n\n## 方法封装\n```js\nimport * as XLSX from 'xlsx';\n\n\u002F\u002F参数说明\n\u002F\u002Fconfiguration: {\n\u002F\u002F  data: [], \u002F\u002F 导出的数据\n\u002F\u002F  head: {}, \u002F\u002F 导出的数据对应的表头\n\u002F\u002F  name: '', \u002F\u002F 导出的文件名\n\u002F\u002F  label: '', \u002F\u002F 导出的表单名\n\u002F\u002F  widthArr: [], \u002F\u002F 导出的表单列宽\n\u002F\u002F}\n\n\u002F\u002F 导出excel\nexport const ExportXlsx = (configuration) => {\n  const { data, head, name, label, widthArr } = configuration;\n\n  const list = data.map((item) => {\n    const obj = {};\n    for (const k in item) {\n      if (head[k]) {\n        obj[head[k]] = item[k];\n      }\n    }\n    return obj;\n  });\n\n  \u002F\u002F 创建工作表\n  const xLSXData = XLSX.utils.json_to_sheet(list);\n  \u002F\u002F 创建工作簿\n  const wb = XLSX.utils.book_new();\n  \u002F\u002F 将工作表放入工作簿中\n  XLSX.utils.book_append_sheet(wb, xLSXData, label);\n  xLSXData['!cols'] = [];\n  \u002F\u002F 设置列宽\n  widthArr.forEach((item) => {\n    xLSXData['!cols'].push({ wpx: item });\n  });\n\n  \u002F\u002F 生成文件并下载\n  XLSX.writeFile(wb, `${name}.xlsx`);\n};\n\n\u002F\u002F 导入excel\nexport const ImportXlsx = (e) => {\n  const file = e.target.files[0];\n  const reader = new FileReader();\n  reader.readAsArrayBuffer(file);\n  reader.onload = (e) => {\n    const data = e.target.result;\n    const workbook = XLSX.read(data, { type: 'binary', cellDates: true });\n    const wsname = workbook.SheetNames[0];\n    const outdata = XLSX.utils.sheet_to_json(workbook.Sheets[wsname]);\n    console.log(outdata);\n  };\n};\n\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F80231a326d3846b895a7d46c99e738ce.png",1334,"2023-03-14T06:18:59.000Z","2026-06-26T09:54:47.798Z",{"id":111,"name":112,"slug":113},{"id":28,"name":29,"avatar":19},[390],{"id":183,"name":184,"slug":185},{"id":392,"title":393,"slug":394,"content":395,"excerpt":393,"coverImage":396,"status":17,"isPinned":18,"pinnedAt":19,"viewCount":397,"publishedAt":398,"createdAt":398,"updatedAt":399,"category":400,"author":404,"tags":405},"80920598-a452-4357-bf53-842b200560e8","React18入门到精通教程","react18入门到精通教程","\n## JSX实现列表渲染\n> 使用`map()`方法遍历数组，必须添加`key`属性提高性能\n```jsx\nconst songs = [\n  { id: 1, name: \\\"helo1\\\" },\n  { id: 2, name: \\\"helo2\\\" },\n  { id: 3, name: \\\"helo3\\\" },\n];\n\nfunction App() {\n  return (\n    \u003Cdiv>\n      \u003Cul>\n        {songs.map((song) => (\n          \u002F\u002F 关键：添加唯一key标识符（避免使用索引）\n          \u003Cli key={song.id}>  \n            {song.id}-{song.name}\n          \u003C\u002Fli>\n        ))}\n      \u003C\u002Ful>\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n**最佳实践：**\n1. 使用`\u003Cul>`包裹列表项\n2. `key`应使用稳定唯一标识（如ID），避免数组索引\n3. 空列表处理：`{songs.length > 0 && ...}` 或 `{songs.map(...) || \u003CEmptyView\u002F>}`\n\n## JSX实现条件渲染\n### 简单逻辑\n```jsx\n\u002F\u002F 三元表达式\n{isLoggedIn ? \u003CDashboard \u002F> : \u003CLoginForm \u002F>}\n\n\u002F\u002F 逻辑短路\n{hasNotification && \u003CNotificationBadge count={5} \u002F>}\n\n\u002F\u002F 空值处理\n{userProfile?.avatar || \u003CDefaultAvatar \u002F>}\n```\n\n### 复杂逻辑\n```jsx\nconst renderContent = (type) => {\n  switch(type) {\n    case 'success': \n      return \u003CSuccessAlert \u002F>;\n    case 'error':\n      return \u003CErrorAlert \u002F>;\n    default:\n      return \u003CInfoAlert \u002F>;\n  }\n}\n\nfunction App() {\n  return (\n    \u003Cdiv className=\\\"container\\\">\n      {renderContent(status)}\n      \n      {\u002F* 另一种模式：立即执行函数 *\u002F}\n      {(() => {\n        if (isLoading) return \u003CSpinner \u002F>;\n        if (isEmpty) return \u003CEmptyState \u002F>;\n        return \u003CDataTable \u002F>;\n      })()}\n    \u003C\u002Fdiv>\n  )\n}\n```\n\n## JSX样式处理\n### 行内样式\n```jsx\n\u002F\u002F 直接对象\n\u003Cdiv style={{ \n  color: 'white', \n  backgroundColor: 'teal',\n  padding: '1rem'\n}}>\n\n\u002F\u002F 样式对象复用\nconst alertStyle = {\n  padding: '15px',\n  borderRadius: '4px',\n  margin: '10px 0'\n};\n\nfunction Alert({ type }) {\n  return (\n    \u003Cdiv style={{\n      ...alertStyle,  \u002F\u002F 扩展运算符合并样式\n      background: type === 'error' ? '#f8d7da' : '#d4edda'\n    }}>\n      {message}\n    \u003C\u002Fdiv>\n  )\n}\n```\n\n### 类名控制（推荐）\n```css\n\u002F* styles.module.css *\u002F\n.card {\n  border: 1px solid #ddd;\n  border-radius: 8px;\n  padding: 20px;\n  box-shadow: 0 2px 4px rgba(0,0,0,0.1);\n}\n\n.highlight {\n  background-color: #ffffe0;\n}\n```\n\n```jsx\nimport styles from '.\u002Fstyles.module.css';\n\nfunction ProductCard({ featured }) {\n  return (\n    \u003Cdiv className={`${styles.card} ${featured ? styles.highlight : ''}`}>\n      {\u002F* 内容 *\u002F}\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n## React 18新特性\n### 并发模式（Concurrent Mode）\n```jsx\nimport { startTransition } from 'react';\n\n\u002F\u002F 非紧急状态更新\nfunction handleSearch(query) {\n  startTransition(() => {\n    setSearchQuery(query); \u002F\u002F 可中断的渲染\n  });\n}\n```\n\n### 自动批处理（Automatic Batching）\n```jsx\n\u002F\u002F React 17及之前：两次渲染\n\u002F\u002F React 18：自动批处理，一次渲染\nfunction handleClick() {\n  setCount(c => c + 1);\n  setFlag(f => !f);\n}\n```\n\n## Redux状态管理（现代写法）\n### 安装依赖\n```bash\nnpm install @reduxjs\u002Ftoolkit react-redux\n```\n\n### 创建Store\n```js\n\u002F\u002F store.js\nimport { configureStore, createSlice } from '@reduxjs\u002Ftoolkit';\n\nconst counterSlice = createSlice({\n  name: 'counter',\n  initialState: { value: 0 },\n  reducers: {\n    increment: state => { state.value += 1 },\n    decrement: state => { state.value -= 1 },\n    incrementByAmount: (state, action) => {\n      state.value += action.payload\n    }\n  }\n});\n\n\u002F\u002F 异步操作示例\nexport const fetchUserData = () => async (dispatch) => {\n  const response = await fetch('\u002Fapi\u002Fuser');\n  dispatch(setUser(await response.json()));\n};\n\nexport const store = configureStore({\n  reducer: {\n    counter: counterSlice.reducer,\n    \u002F\u002F 其他reducer...\n  }\n});\n\nexport const { increment, decrement } = counterSlice.actions;\n```\n\n### 组件集成\n```jsx\n\u002F\u002F index.js\nimport { Provider } from 'react-redux';\nimport { store } from '.\u002Fstore';\n\nroot.render(\n  \u003CProvider store={store}>\n    \u003CApp \u002F>\n  \u003C\u002FProvider>\n);\n\n\u002F\u002F Counter.js\nimport { useSelector, useDispatch } from 'react-redux';\nimport { increment, decrement } from '.\u002Fstore';\n\nfunction Counter() {\n  const count = useSelector(state => state.counter.value);\n  const dispatch = useDispatch();\n\n  return (\n    \u003Cdiv>\n      \u003Cbutton onClick={() => dispatch(decrement())}>-\u003C\u002Fbutton>\n      \u003Cspan>{count}\u003C\u002Fspan>\n      \u003Cbutton onClick={() => dispatch(increment())}>+\u003C\u002Fbutton>\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n## 最佳实践总结\n1. **组件设计**：遵循单一职责原则，拆分智能组件（容器组件）和展示组件\n2. **状态管理**：\n   - 局部状态用`useState`\u002F`useReducer`\n   - 全局共享状态用Redux\n   - 避免过度使用状态提升\n3. **性能优化**：\n   - 使用`React.memo`记忆组件\n   - 使用`useCallback`\u002F`useMemo`避免不必要的重渲染\n   - 虚拟化长列表（react-window）\n4. **Hooks规范**：\n   - 避免在循环\u002F条件中使用Hook\n   - 自定义Hook以`use`前缀命名\n5. **TypeScript集成**：\n   ```tsx\n   interface UserCardProps {\n     name: string;\n     age: number;\n     onSelect: (id: string) => void;\n   }\n   \n   const UserCard: React.FC\u003CUserCardProps> = ({ name, age }) => (\n     \u003Cdiv>{name} ({age})\u003C\u002Fdiv>\n   )\n   ```\n\n下面为您完善教程，增加React路由和生命周期相关内容：\n\n## React路由管理（React Router v6）\n\n### 安装与基础配置\n```bash\nnpm install react-router-dom@6\n```\n\n### 路由基础结构\n```jsx\n\u002F\u002F index.js\nimport { BrowserRouter } from 'react-router-dom';\n\nconst root = ReactDOM.createRoot(document.getElementById('root'));\nroot.render(\n  \u003CBrowserRouter>\n    \u003CApp \u002F>\n  \u003C\u002FBrowserRouter>\n);\n\n\u002F\u002F App.js\nimport { Routes, Route, Link } from 'react-router-dom';\n\nfunction App() {\n  return (\n    \u003Cdiv>\n      \u003Cnav>\n        \u003CLink to=\\\"\u002F\\\">首页\u003C\u002FLink>\n        \u003CLink to=\\\"\u002Fabout\\\">关于\u003C\u002FLink>\n        \u003CLink to=\\\"\u002Fusers\\\">用户列表\u003C\u002FLink>\n      \u003C\u002Fnav>\n      \n      \u003CRoutes>\n        \u003CRoute path=\\\"\u002F\\\" element={\u003CHome \u002F>} \u002F>\n        \u003CRoute path=\\\"\u002Fabout\\\" element={\u003CAbout \u002F>} \u002F>\n        \u003CRoute path=\\\"\u002Fusers\\\" element={\u003CUserList \u002F>} \u002F>\n        \u003CRoute path=\\\"\u002Fusers\u002F:id\\\" element={\u003CUserDetail \u002F>} \u002F>\n        \u003CRoute path=\\\"*\\\" element={\u003CNotFound \u002F>} \u002F>\n      \u003C\u002FRoutes>\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n### 嵌套路由\n```jsx\n\u002F\u002F Dashboard.js\nimport { Outlet } from 'react-router-dom';\n\nfunction Dashboard() {\n  return (\n    \u003Cdiv>\n      \u003Ch2>仪表盘\u003C\u002Fh2>\n      \u003COutlet \u002F> {\u002F* 子路由渲染位置 *\u002F}\n    \u003C\u002Fdiv>\n  );\n}\n\n\u002F\u002F 路由配置\n\u003CRoutes>\n  \u003CRoute path=\\\"\u002Fdashboard\\\" element={\u003CDashboard \u002F>}>\n    \u003CRoute index element={\u003CDashboardHome \u002F>} \u002F>\n    \u003CRoute path=\\\"settings\\\" element={\u003CDashboardSettings \u002F>} \u002F>\n    \u003CRoute path=\\\"analytics\\\" element={\u003CDashboardAnalytics \u002F>} \u002F>\n  \u003C\u002FRoute>\n\u003C\u002FRoutes>\n```\n\n### 编程式导航\n```jsx\nimport { useNavigate, useParams, useLocation } from 'react-router-dom';\n\nfunction UserCard({ user }) {\n  const navigate = useNavigate();\n  \n  return (\n    \u003Cdiv onClick={() => navigate(`\u002Fusers\u002F${user.id}`)}>\n      {user.name}\n    \u003C\u002Fdiv>\n  );\n}\n\nfunction UserDetail() {\n  const { id } = useParams(); \u002F\u002F 获取URL参数\n  const location = useLocation(); \u002F\u002F 获取位置对象\n  \n  return (\n    \u003Cdiv>\n      \u003Ch2>用户ID: {id}\u003C\u002Fh2>\n      \u003Cp>当前路径: {location.pathname}\u003C\u002Fp>\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n### 路由守卫（认证保护）\n```jsx\nimport { Navigate } from 'react-router-dom';\n\nfunction ProtectedRoute({ children }) {\n  const { isAuthenticated } = useAuth();\n  \n  if (!isAuthenticated) {\n    return \u003CNavigate to=\\\"\u002Flogin\\\" replace \u002F>;\n  }\n  \n  return children;\n}\n\n\u002F\u002F 使用\n\u003CRoute \n  path=\\\"\u002Fdashboard\\\" \n  element={\n    \u003CProtectedRoute>\n      \u003CDashboard \u002F>\n    \u003C\u002FProtectedRoute>\n  } \n\u002F>\n```\n\n## React生命周期\n\n### 类组件生命周期方法\n\n```jsx\nclass LifecycleDemo extends React.Component {\n  \u002F\u002F 1. 初始化阶段\n  constructor(props) {\n    super(props);\n    this.state = { count: 0 };\n    console.log('Constructor');\n  }\n\n  \u002F\u002F 2. 挂载阶段\n  componentDidMount() {\n    console.log('Component did mount');\n    \u002F\u002F 适合进行API调用、事件订阅\n    this.timer = setInterval(() => {\n      this.setState(prev => ({ count: prev.count + 1 }));\n    }, 1000);\n  }\n\n  \u002F\u002F 3. 更新阶段\n  shouldComponentUpdate(nextProps, nextState) {\n    console.log('Should component update?');\n    return nextState.count !== this.state.count;\n  }\n\n  componentDidUpdate(prevProps, prevState) {\n    console.log('Component did update');\n  }\n\n  \u002F\u002F 4. 卸载阶段\n  componentWillUnmount() {\n    console.log('Component will unmount');\n    \u002F\u002F 清理操作\n    clearInterval(this.timer);\n  }\n\n  render() {\n    console.log('Render');\n    return \u003Cdiv>Count: {this.state.count}\u003C\u002Fdiv>;\n  }\n}\n```\n\n### 函数组件生命周期（Hooks实现）\n\n```jsx\nimport { useState, useEffect } from 'react';\n\nfunction FunctionLifecycle() {\n  const [count, setCount] = useState(0);\n  const [data, setData] = useState(null);\n\n  \u002F\u002F 相当于componentDidMount + componentDidUpdate\n  useEffect(() => {\n    console.log('每次渲染后执行');\n  });\n\n  \u002F\u002F 相当于componentDidMount\n  useEffect(() => {\n    console.log('组件挂载后执行');\n    \n    \u002F\u002F 数据获取\n    fetch('\u002Fapi\u002Fdata')\n      .then(res => res.json())\n      .then(setData);\n    \n    \u002F\u002F 相当于componentWillUnmount\n    return () => {\n      console.log('组件卸载前执行');\n    };\n  }, []); \u002F\u002F 空依赖数组\n\n  \u002F\u002F 依赖变化时执行\n  useEffect(() => {\n    console.log('count变化时执行:', count);\n    \n    document.title = `Count: ${count}`;\n    \n    return () => {\n      console.log('清理count效果');\n    };\n  }, [count]); \u002F\u002F count依赖\n\n  return (\n    \u003Cdiv>\n      \u003Cp>Count: {count}\u003C\u002Fp>\n      \u003Cbutton onClick={() => setCount(c => c + 1)}>增加\u003C\u002Fbutton>\n      {data && \u003Cpre>{JSON.stringify(data, null, 2)}\u003C\u002Fpre>}\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n### 生命周期阶段对比\n\n| 阶段 | 类组件方法 | 函数组件Hook |\n|------|------------|--------------|\n| **挂载** | constructor | useState初始化 |\n|       | render      | 函数体执行    |\n|       | componentDidMount | useEffect(() => {}, []) |\n| **更新** | shouldComponentUpdate | React.memo, useMemo |\n|       | render      | 函数体执行    |\n|       | componentDidUpdate | useEffect(() => {}) |\n| **卸载** | componentWillUnmount | useEffect返回函数 |\n| **错误处理** | componentDidCatch | 暂无直接等效，需错误边界组件 |\n\n### 现代React开发建议\n\n1. **优先使用函数组件+Hooks**：\n   - 90%的场景可替代类组件\n   - 更简洁的代码结构\n   - 更好的逻辑复用\n\n2. **关键生命周期替代**：\n   - `componentDidMount` → `useEffect(() => {}, [])`\n   - `componentDidUpdate` → `useEffect(() => {})` 或带依赖的 `useEffect`\n   - `componentWillUnmount` → `useEffect(() => { return cleanup }, [])`\n   - `shouldComponentUpdate` → `React.memo` 或 `useMemo`\n\n3. **数据获取最佳实践**：\n```jsx\nuseEffect(() => {\n  let isMounted = true;\n  \n  const fetchData = async () => {\n    try {\n      const result = await api.getData();\n      if (isMounted) setData(result);\n    } catch (error) {\n      if (isMounted) setError(error);\n    }\n  };\n  \n  fetchData();\n  \n  return () => {\n    isMounted = false; \u002F\u002F 避免组件卸载后设置状态\n  };\n}, []);\n```\n\n## 路由与生命周期整合示例\n\n```jsx\nfunction UserProfile() {\n  const { id } = useParams();\n  const [user, setUser] = useState(null);\n  const [loading, setLoading] = useState(true);\n\n  useEffect(() => {\n    let isActive = true;\n    \n    const fetchUser = async () => {\n      try {\n        setLoading(true);\n        const data = await fetchUserById(id);\n        if (isActive) {\n          setUser(data);\n          setLoading(false);\n        }\n      } catch (error) {\n        if (isActive) {\n          setError(error.message);\n          setLoading(false);\n        }\n      }\n    };\n    \n    fetchUser();\n    \n    return () => {\n      isActive = false; \u002F\u002F 清理效果\n    };\n  }, [id]); \u002F\u002F id变化时重新获取\n\n  if (loading) return \u003CSpinner \u002F>;\n  \n  return (\n    \u003Cdiv>\n      \u003Ch2>{user.name}\u003C\u002Fh2>\n      \u003Cp>Email: {user.email}\u003C\u002Fp>\n    \u003C\u002Fdiv>\n  );\n}\n```\n\n## 完整项目结构建议\n\n```\nsrc\u002F\n├── components\u002F      # 通用UI组件\n├── pages\u002F           # 页面组件\n├── layouts\u002F         # 布局组件\n├── hooks\u002F           # 自定义Hooks\n├── store\u002F           # Redux状态\n│   ├── slices\u002F\n│   └── store.js\n├── services\u002F        # API服务\n├── routers\u002F         # 路由配置\n├── utils\u002F           # 工具函数\n├── assets\u002F          # 静态资源\n└── App.js           # 主应用组件\n```\n\n这些新增内容涵盖了React路由的现代用法（v6版本）以及React生命周期的详细解释，包括类组件和函数组件的实现方式对比。同时还提供了路由与生命周期整合的实际示例，帮助开发者理解如何在真实项目中应用这些概念。","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F46e205aa1bd33d1bb7201019fc2fdf43.png",1147,"2023-02-21T02:01:52.000Z","2026-06-26T10:25:15.418Z",{"id":401,"name":402,"slug":403},"f1701085-b8c1-413a-8750-58e7a0a33832","React","react",{"id":28,"name":29,"avatar":19},[406],{"id":224,"name":225,"slug":226}]