[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"post-js-cookie插件教程":3,"comments-POST-a948ba5c-cf86-4327-a1d7-128ba4fd13ac-1":26,"sidebar-data":31},{"id":4,"title":5,"slug":5,"content":6,"excerpt":5,"coverImage":7,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":11,"publishedAt":12,"createdAt":12,"updatedAt":13,"category":14,"author":18,"tags":21},"a948ba5c-cf86-4327-a1d7-128ba4fd13ac","js-cookie插件教程","## 简介\n> js-cookie是一个简单的，轻量级的处理cookies的js API。 通过npm安装后, 首先要在main.js中引入，否则报错。 在其他的单页面vue文件中使用js-cookie时, 每次使用都要再次引入， 否则报错。不能全局引入或者挂载到Vue的实例上。\n\n## 安装\n```shell\nnpm i js-cookie -S\n```\n### 在main.js入口文件中引入\n```js\nimport Cookies from 'js-cookie'\n```\n### 在test.vuevue单文件中使用\n> 首先引入import Cookies from 'js-cookie'。 然后在methods中定义的方法中去根据js-cookie的使用语法进行操作\n\n##  最基础用法\n```js\n\u002F\u002F 设置cookie\nCookies.set('name', 'andy凌云');\n\u002F\u002F 获取cookie   获取不到返回undefined\nCookies.get('name');\n\u002F\u002F 直接获取解析后的全部cookie对象\nCookies.getJSON(); \n\u002F\u002F 删除cookie\nCookies.remove('name');\n```\n\n## 进阶用法\n```js\n\u002F\u002F 1. 设置cookie \n    \nCookies.set(\\\"name\\\", { foo: \\\"bar\\\" });   \u002F\u002F json格式\n\u002F\u002F Create an expiring cookie, valid to the path of the current page:\nCookies.set(\\\"name\\\", \\\"andy凌云\\\", { expires: 7, path: \\\"\\\" }); \u002F\u002F 7天过期\n\n\u002F\u002F 2. 读取cookie\nCookies.get(\\\"name\\\"); \u002F\u002F读取名字为name的cookie, \nCookies.get(); \u002F\u002F 读取所有的cookie,结果是个对象。\nCookies.getJSON(); \u002F\u002F 读取所有cookie, 结果是个解析后的对象， 推荐使用\n\n\u002F\u002F 3. 删除cookie\nCookies.remove('name') \u002F\u002F 最基本的方式是根据所存的键值删除对应cookie\n\u002F\u002F 删除全部cookie \n\u002F* 在网上搜了半天， 没搜到删除全部cookie的API方法。 笨的办法通过Cookies.get()去获取\n全部cookie组成的对象,然后遍历对象，根据各个键的值去依次删除 *\u002F\nlet allCookies = Cookies.get();\nObject.keys(allCookies).forEach((item)=>{\n  Cookies.remove(item);\n})\n\u002F\u002F 删除完成后， 再取Cookies.get()得到是一个空对象\n\n\u002F\u002F4. 特殊使用(在cookie中读取对象或数组)\n\n\u002F\u002F 跟一般使用不同的是，从Cookie中取出的时候，要从字符串转换成json格式：\nconst user = {\n  name: \\\"lia\\\",\n  age: 18\n};\nconst nameList = [\n  'andy凌云',\n  '天道酬勤',\n  '地道酬善'\n]\nCookies.set('user', user)\nCookies.set('nameList', nameList)\n\u002F\u002F 4.1  使用基础的JSON.parse方法去将get后的字符串解析为对象或数组\nJSON.parse(Cookies.get(\\\"user\\\"));\nJSON.parse(Cookies.get(\\\"nameList\\\"));\n\u002F\u002F 4.2 使用js-cookie自带的getJSON方法， 直接就解析成了能直接进行操作的数组或对象\nCookies.getJSON('user');\nCookies.getJSON('nameList');\n\u002F\u002F 如果是想直接操作所有的cookie对象，建议不要使用Cookies.get(),因为它得到的值是字符串，还需要使用JSON.parse()去解析， 最好使用Cookies.getJSON()。\n\n```\n\n## set方法支持的属性\n| 属性 | 说明 |\n| - | - |\n| expires | 定义有效期。如果传入Number，那么单位为天，你也可以传入一个Date对象，表示有效期至Date指定时间。默认情况下cookie有效期截止至用户退出浏览器 |\n| path | string，表示此cookie对哪个地址可见。默认为'\u002F' |\n| domain | string，表示此cookie对哪个域名可见, 设置后cookie会对所有子域名可见。默认为对创建此cookie的域名和子域名可见 |\n| secure | true或false，表示cookie传输是否仅支持https。默认为不要求协议必须为https |\n\n## 封装公共方法来操作token\n```js\nimport Cookies from 'js-cookie'\n\nconst TokenKey = 'Admin-Token'\n\nexport function getToken() {\n  return Cookies.get(TokenKey)\n}\n\nexport function setToken(token) {\n  return Cookies.set(TokenKey, token)\n}\n\nexport function removeToken() {\n  return Cookies.remove(TokenKey)\n}\n```\n","https:\u002F\u002Fcdn.xiaolong0418.com\u002Fmyblog\u002Fimages\u002F25d7d5663c87996a87b6334fae798458.png","PUBLISHED",false,null,781,"2023-01-02T02:44:29.000Z","2026-06-27T11:15:53.684Z",{"id":15,"name":16,"slug":17},"e0f3b8d8-cfe7-41fb-802b-a79699d95968","JavaScript插件","javascript插件",{"id":19,"name":20,"avatar":10},"f9d0f2de-c700-4f90-b535-afd3dbe78128","Admin",[22],{"id":23,"name":24,"slug":25},"994cc226-578b-4a72-a57e-a47a63d2793e","JavaScript生态","javascript生态",{"list":27,"total":28,"page":29,"pageSize":30},[],0,1,20,{"categories":32,"tags":116,"postCount":297,"tagCount":298,"hotPosts":299},[33,39,46,53,59,66,73,77,81,85,89,95,101,106,110],{"id":34,"name":35,"slug":36,"description":37,"sortOrder":28,"createdAt":38,"updatedAt":38,"postCount":29},"e8d0bd45-d10c-46d3-8afb-0c072df7f8a7","技术","tech","技术文章","2026-06-27T04:18:37.371Z",{"id":40,"name":41,"slug":42,"description":41,"sortOrder":29,"createdAt":43,"updatedAt":44,"postCount":45},"15ac46ad-edf7-4435-9a64-ff78117d58c5","Vue3 生态","vue3-生态","2022-05-21T08:05:39.000Z","2023-02-08T02:49:14.000Z",6,{"id":47,"name":48,"slug":49,"description":48,"sortOrder":50,"createdAt":51,"updatedAt":44,"postCount":52},"11d4d397-685c-4180-a7b3-9b0e3a1e411e","Css","css",2,"2022-05-23T07:19:37.000Z",9,{"id":54,"name":55,"slug":55,"description":55,"sortOrder":56,"createdAt":57,"updatedAt":44,"postCount":58},"d10456a5-e649-4741-a38f-f07f266ce5f2","开发环境",3,"2022-05-24T01:52:41.000Z",13,{"id":60,"name":61,"slug":62,"description":61,"sortOrder":63,"createdAt":64,"updatedAt":44,"postCount":65},"5ed5cc62-43ea-49a2-b0b2-38bc7aae52a0","Vue3","vue3",4,"2022-05-24T01:55:05.000Z",8,{"id":67,"name":68,"slug":69,"description":68,"sortOrder":70,"createdAt":71,"updatedAt":44,"postCount":72},"da130ba9-d4f4-49f3-aa0f-149078097ef0","JavaScript","javascript",5,"2022-05-24T02:22:57.000Z",18,{"id":74,"name":75,"slug":75,"description":75,"sortOrder":45,"createdAt":76,"updatedAt":44,"postCount":29},"d8cbe380-54b3-4a61-a12d-5438c2918574","限时优惠","2022-05-25T07:18:03.000Z",{"id":15,"name":16,"slug":17,"description":16,"sortOrder":78,"createdAt":79,"updatedAt":44,"postCount":80},7,"2022-06-01T14:08:31.000Z",16,{"id":82,"name":83,"slug":83,"description":83,"sortOrder":65,"createdAt":84,"updatedAt":44,"postCount":45},"4ea3d8af-9cc3-49bb-a9cd-34dbcdc3bd85","构建工具","2022-06-02T07:28:13.000Z",{"id":86,"name":87,"slug":87,"description":87,"sortOrder":52,"createdAt":88,"updatedAt":44,"postCount":65},"9ed9827c-9cbb-42da-80e4-d04c7fdba886","开发工具","2022-06-21T03:35:05.000Z",{"id":90,"name":91,"slug":92,"description":91,"sortOrder":93,"createdAt":94,"updatedAt":44,"postCount":70},"6b9179c3-17b2-43ff-a431-a03d6eb32d89","Vue2 生态","vue2-生态",10,"2022-07-16T13:14:29.000Z",{"id":96,"name":97,"slug":98,"description":97,"sortOrder":99,"createdAt":100,"updatedAt":44,"postCount":70},"73a5f62c-3c47-45b9-9ae2-f29953ae8dc0","Node","node",11,"2022-07-16T13:15:39.000Z",{"id":102,"name":103,"slug":103,"description":103,"sortOrder":104,"createdAt":105,"updatedAt":44,"postCount":50},"2b696c16-48ef-403b-a88b-6e57cfc79596","开发问题",12,"2022-07-16T14:06:54.000Z",{"id":107,"name":108,"slug":108,"description":108,"sortOrder":58,"createdAt":109,"updatedAt":44,"postCount":29},"c0f0561e-a47a-4ecd-8caa-cc1df2315d57","算法","2022-07-16T14:22:34.000Z",{"id":111,"name":112,"slug":113,"description":112,"sortOrder":114,"createdAt":115,"updatedAt":44,"postCount":56},"a629c1f7-29f1-439e-be3c-29670b17ba20","Vue2","vue2",15,"2022-07-16T14:41:51.000Z",[117,123,128,131,136,141,142,146,151,156,161,166,169,174,178,182,187,192,197,202,206,210,214,216,220,225,230,233,236,239,242,245,249,252,254,256,259,263,266,270,274,277,280,282,285,287,291,294],{"id":118,"name":119,"slug":120,"createdAt":121,"updatedAt":122},"076bd8b9-293e-45cb-9dc3-e162007ca474","Axios","axios","2022-06-05T07:41:56.000Z","2025-12-30T07:26:21.000Z",{"id":124,"name":125,"slug":126,"createdAt":127,"updatedAt":44},"2aa7f6d0-1fac-4ed1-b9bb-f3afc813f42c","Axure","axure","2022-06-21T03:35:15.000Z",{"id":129,"name":48,"slug":49,"createdAt":130,"updatedAt":44},"b084ddd8-09be-4e57-98f0-cf4e376aecd7","2022-05-21T09:59:55.000Z",{"id":132,"name":133,"slug":134,"createdAt":135,"updatedAt":44},"78a62bff-ff77-4878-8c25-3e6aae18c668","Docker","docker","2022-07-16T14:34:37.000Z",{"id":137,"name":138,"slug":139,"createdAt":140,"updatedAt":44},"2de16806-ef3f-4e54-a259-d1e1e182468c","Git","git","2022-07-16T14:25:15.000Z",{"id":23,"name":24,"slug":25,"createdAt":130,"updatedAt":44},{"id":143,"name":144,"slug":145,"createdAt":130,"updatedAt":44},"5086e93c-23b9-43d3-9643-cc87f0e9ee94","JenKins","jenkins",{"id":147,"name":148,"slug":149,"createdAt":150,"updatedAt":44},"b73007a8-bb5c-42a8-9fd9-163033a5b45d","Linux","linux","2022-07-16T14:40:17.000Z",{"id":152,"name":153,"slug":154,"createdAt":155,"updatedAt":44},"0b658b92-dd6b-4db3-a398-9f6d69950a02","Markdown","markdown","2022-07-16T14:39:25.000Z",{"id":157,"name":158,"slug":159,"createdAt":160,"updatedAt":44},"ab034d3a-6e5b-4db5-a2dc-faf4ccbb63f5","Nest","nest","2022-07-16T13:15:49.000Z",{"id":162,"name":163,"slug":164,"createdAt":165,"updatedAt":44},"52c41978-da06-4962-9636-45bbaeedda80","Nginx","nginx","2022-05-21T09:59:56.000Z",{"id":167,"name":168,"slug":168,"createdAt":165,"updatedAt":44},"0f1cc678-40e4-44b1-b2cf-a6fd8a1c867a","npm",{"id":170,"name":171,"slug":172,"createdAt":173,"updatedAt":44},"a4370d78-70e1-4073-a8f6-3dc5d81fd8fd","Nuxt","nuxt","2022-06-01T13:07:07.000Z",{"id":175,"name":176,"slug":177,"createdAt":130,"updatedAt":44},"d232e01f-048e-4151-8a0a-fff9561f946f","Pinia","pinia",{"id":179,"name":180,"slug":181,"createdAt":165,"updatedAt":44},"14e9ab02-b0bb-4c85-8604-fe6f1f0f33cd","Pnpm","pnpm",{"id":183,"name":184,"slug":185,"createdAt":186,"updatedAt":186},"399d1d38-cc0d-43ce-8baf-c769447a2ebd","React生态","react生态","2023-02-21T02:03:09.000Z",{"id":188,"name":189,"slug":190,"createdAt":191,"updatedAt":44},"c95bbe84-bdd0-410a-86a9-e87958c55f4f","Redis","redis","2022-10-05T05:14:14.000Z",{"id":193,"name":194,"slug":195,"createdAt":196,"updatedAt":44},"6d05f9df-e116-450f-af57-85ed710c4870","Swiper","swiper","2022-06-01T14:08:46.000Z",{"id":198,"name":199,"slug":200,"createdAt":201,"updatedAt":44},"66f3aeb0-84ef-45f6-a43a-944eefc9895a","Vite","vite","2022-06-02T07:28:24.000Z",{"id":203,"name":204,"slug":205,"createdAt":130,"updatedAt":44},"bf5b94d3-090b-4098-a03c-4bc69781fb2d","Vue","vue",{"id":207,"name":208,"slug":209,"createdAt":165,"updatedAt":44},"2f7fb1be-b9c5-4606-b54f-e9f66f2653b2","Vue-Router","vue-router",{"id":211,"name":212,"slug":213,"createdAt":130,"updatedAt":44},"2fef3b91-1c1c-4ae8-b2c1-0e04b4f9b3a2","Vue2生态","vue2生态",{"id":215,"name":61,"slug":62,"createdAt":130,"updatedAt":44},"62b94c93-724f-488d-8fc5-0449971d9204",{"id":217,"name":218,"slug":219,"createdAt":130,"updatedAt":44},"20bff9cd-7848-4c16-8775-42cf12b44b30","Vue3生态","vue3生态",{"id":221,"name":222,"slug":223,"createdAt":224,"updatedAt":44},"c807b2c6-cb12-4409-a1f1-6bea9f330a6b","Vuex","vuex","2022-07-16T13:14:59.000Z",{"id":226,"name":227,"slug":228,"createdAt":229,"updatedAt":44},"5782dff5-2ea2-4427-9696-d4363a7fd5bc","Webpack","webpack","2022-07-16T14:33:41.000Z",{"id":231,"name":232,"slug":232,"createdAt":130,"updatedAt":44},"d0aa41f4-68f8-48d4-a4ed-3a503ea90451","下载",{"id":234,"name":235,"slug":235,"createdAt":130,"updatedAt":44},"a046060c-39ef-474a-8c85-2546aca0e2e5","代码片段",{"id":237,"name":238,"slug":238,"createdAt":130,"updatedAt":44},"fee73435-b2be-4b55-85b1-d133ea96aea4","伪元素",{"id":240,"name":241,"slug":241,"createdAt":130,"updatedAt":44},"436bd369-8c57-4869-8827-e88e50e5e0ab","伪类",{"id":243,"name":244,"slug":244,"createdAt":130,"updatedAt":44},"4c6be544-8a00-4445-92a3-e3dcbaf6142e","动画",{"id":246,"name":247,"slug":247,"createdAt":248,"updatedAt":44},"9321a12e-ea72-49a9-a32d-5566149f812f","图片压缩","2022-08-02T00:37:47.000Z",{"id":250,"name":251,"slug":251,"createdAt":165,"updatedAt":44},"512b16fb-576a-4397-a7c5-dd20e6a8f9ca","布局",{"id":253,"name":87,"slug":87,"createdAt":130,"updatedAt":44},"f32faa96-f2ec-45c6-9a17-2c76062edcb0",{"id":255,"name":55,"slug":55,"createdAt":130,"updatedAt":44},"3c46ed3f-6d6b-4f91-bcb3-af5112860bf5",{"id":257,"name":258,"slug":258,"createdAt":130,"updatedAt":44},"dbfc086a-73a6-4560-814d-593acb61cf98","性能优化",{"id":260,"name":261,"slug":261,"createdAt":262,"updatedAt":44},"1831cd06-0d6b-48f7-94fa-324782fe23cb","拖拽","2022-07-28T12:39:13.000Z",{"id":264,"name":265,"slug":265,"createdAt":165,"updatedAt":44},"9a74300d-06f7-46d0-80d9-8fe67ec0539b","数组",{"id":267,"name":268,"slug":268,"createdAt":269,"updatedAt":44},"19ac8998-7e0a-459b-9702-bb1adca70e8c","文本复制","2022-07-17T01:54:45.000Z",{"id":271,"name":272,"slug":272,"createdAt":273,"updatedAt":44},"5ff33473-71a4-4e02-8c82-f9ea369a768f","时间","2022-07-17T01:51:12.000Z",{"id":275,"name":276,"slug":276,"createdAt":130,"updatedAt":44},"aa47ca4d-d3f6-4cac-b495-2c67c9592c36","最新优惠",{"id":278,"name":279,"slug":279,"createdAt":165,"updatedAt":44},"f6766d54-54fc-405e-932d-b7d550559125","服务器",{"id":281,"name":83,"slug":83,"createdAt":130,"updatedAt":44},"d856559a-03ff-40b4-980d-3f272b998c3c",{"id":283,"name":284,"slug":284,"createdAt":130,"updatedAt":44},"692d5d68-b188-4e5c-aca8-65d0229399a1","渐变",{"id":286,"name":108,"slug":108,"createdAt":130,"updatedAt":44},"38e1fd6b-d7c6-4d62-bf70-7bacc175bea9",{"id":288,"name":289,"slug":289,"createdAt":290,"updatedAt":44},"be7b10bc-49eb-4a03-bea7-ceb915d500fe","规范","2022-07-16T14:41:06.000Z",{"id":292,"name":293,"slug":293,"createdAt":165,"updatedAt":44},"b42e2916-ad62-4b8a-a863-cd8c19a829de","面试",{"id":295,"name":296,"slug":296,"createdAt":165,"updatedAt":44},"7069add9-b636-44f1-9cd4-ea3a6d2b85d3","面试题",104,48,[300,312,324,337,350],{"id":301,"title":302,"slug":302,"content":303,"excerpt":302,"coverImage":304,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":305,"publishedAt":306,"createdAt":306,"updatedAt":307,"category":308,"author":309,"tags":310},"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",1818,"2022-11-22T07:54:41.000Z","2026-06-27T11:04:59.676Z",{"id":67,"name":68,"slug":69},{"id":19,"name":20,"avatar":10},[311],{"id":23,"name":24,"slug":25},{"id":313,"title":314,"slug":314,"content":315,"excerpt":314,"coverImage":316,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":317,"publishedAt":318,"createdAt":318,"updatedAt":319,"category":320,"author":321,"tags":322},"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",1572,"2023-01-10T07:22:29.000Z","2026-06-27T11:07:40.499Z",{"id":90,"name":91,"slug":92},{"id":19,"name":20,"avatar":10},[323],{"id":246,"name":247,"slug":247},{"id":325,"title":326,"slug":327,"content":328,"excerpt":326,"coverImage":329,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":330,"publishedAt":331,"createdAt":331,"updatedAt":332,"category":333,"author":334,"tags":335},"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",1392,"2023-04-19T09:23:27.000Z","2026-06-27T11:08:34.303Z",{"id":60,"name":61,"slug":62},{"id":19,"name":20,"avatar":10},[336],{"id":215,"name":61,"slug":62},{"id":338,"title":339,"slug":340,"content":341,"excerpt":339,"coverImage":342,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":343,"publishedAt":344,"createdAt":344,"updatedAt":345,"category":346,"author":347,"tags":348},"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",1335,"2023-03-14T06:18:59.000Z","2026-06-27T11:06:09.162Z",{"id":67,"name":68,"slug":69},{"id":19,"name":20,"avatar":10},[349],{"id":23,"name":24,"slug":25},{"id":351,"title":352,"slug":353,"content":354,"excerpt":352,"coverImage":355,"status":8,"isPinned":9,"pinnedAt":10,"viewCount":356,"publishedAt":357,"createdAt":357,"updatedAt":358,"category":359,"author":363,"tags":364},"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",1148,"2023-02-21T02:01:52.000Z","2026-06-27T11:00:41.557Z",{"id":360,"name":361,"slug":362},"f1701085-b8c1-413a-8750-58e7a0a33832","React","react",{"id":19,"name":20,"avatar":10},[365],{"id":183,"name":184,"slug":185}]