{"id":2996,"date":"2020-06-23T14:58:11","date_gmt":"2020-06-23T06:58:11","guid":{"rendered":"http:\/\/www.yuguoxy.com\/geekhome\/?p=2996"},"modified":"2026-08-18T12:35:31","modified_gmt":"2026-08-18T04:35:31","slug":"%e5%ae%9e%e6%88%98%e6%8a%80%e5%b7%a7%ef%bc%8cvue%e5%8e%9f%e6%9d%a5%e8%bf%98%e5%8f%af%e4%bb%a5%e8%bf%99%e6%a0%b7%e5%86%99","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2996","title":{"rendered":"\u5b9e\u6218\u6280\u5de7\uff0cVue\u539f\u6765\u8fd8\u53ef\u4ee5\u8fd9\u6837\u5199"},"content":{"rendered":"
\n

\u6bcf\u5929\u5199\u91cd\u590d\u4ee3\u7801\u3001\u5f53 CV \u4ed4\uff0c\u6548\u7387\u4e0a\u4e0d\u53bb\u3002\u4e0a\u4e00\u7bc7\u300a\u7edd\u5bf9\u5e72\u8d27~\uff01\u5b66\u4f1a\u8fd9\u4e9bVue\u5c0f\u6280\u5de7\uff0c\u53ef\u4ee5\u65e9\u70b9\u4e0b\u73ed\u548c\u5973\u795e\u7ea6\u4f1a\u4e86\u300b<\/a>\u6574\u7406\u8fc7\u4e00\u6279 Vue \u5c0f\u6280\u5de7\uff1b\u8fd9\u91cc\u518d\u8865\u4e00\u7ec4\u5b9e\u6218\u5199\u6cd5\uff1ahookEvent<\/strong> \u76d1\u542c\u751f\u547d\u5468\u671f\u3001Vue.observable<\/code> \u5c0f\u9879\u76ee\u72b6\u6001\u3001Vue.extend<\/code> \u5168\u5c40 Loading\u3001\u81ea\u5b9a\u4e49\u6307\u4ee4\u3001watch<\/code> \u7acb\u5373\/\u6df1\u5ea6\u76d1\u542c\uff0c\u4ee5\u53ca\u51fd\u6570\u5f0f\u7ec4\u4ef6\u3002<\/p>\n

\u539f\u6587\uff1ahttps:\/\/juejin.im\/post\/5eef7799f265da02cd3b82fe<\/a>\u3002\u6587\u5185\u793a\u4f8b\u6309\u539f\u77e5\u8bc6\u70b9\u4fdd\u7559\uff0c\u4fbf\u4e8e\u5bf9\u7167\u843d\u5730\u3002<\/p>\n

\u4e00\u3001hookEvent\uff1a\u76d1\u542c\u7ec4\u4ef6\u751f\u547d\u5468\u671f<\/h2>\n

1. \u5185\u90e8\u76d1\u542c<\/h3>\n

\u56fe\u8868\u9700\u6c42\u5e38\u4ece echarts \u793a\u4f8b\u6539\u8d77\uff1amounted<\/code> \u91cc init<\/code> \u5e76\u76d1\u542c resize<\/code>\uff0cbeforeDestroy<\/code> \u518d\u79fb\u9664\u3002\u4e24\u7aef\u4ee3\u7801\u9694\u51e0\u767e\u884c\uff0ccode review \u65f6\u53ef\u8bfb\u6027\u5dee\u3002<\/p>\n

<template>\n  <div class=\"echarts\"><\/div>\n<\/template>\n<script>\nexport default {\n  mounted() {\n    this.chart = echarts.init(this.$el)\n    \/\/ \u8bf7\u6c42\u6570\u636e\uff0c\u8d4b\u503c\u6570\u636e \u7b49\u7b49\u4e00\u7cfb\u5217\u64cd\u4f5c...\n    \/\/ \u76d1\u542c\u7a97\u53e3\u53d1\u751f\u53d8\u5316\uff0cresize\u7ec4\u4ef6\n    window.addEventListener('resize', this.$_handleResizeChart)\n  },\n  updated() {\n    \/\/ \u5e72\u4e86\u4e00\u5806\u6d3b\n  },\n  created() {\n    \/\/ \u5e72\u4e86\u4e00\u5806\u6d3b\n  },\n  beforeDestroy() {\n    \/\/ \u7ec4\u4ef6\u9500\u6bc1\u65f6\uff0c\u9500\u6bc1\u76d1\u542c\u4e8b\u4ef6\n    window.removeEventListener('resize', this.$_handleResizeChart)\n  },\n  methods: {\n    $_handleResizeChart() {\n      this.chart.resize()\n    },\n    \/\/ \u5176\u4ed6\u4e00\u5806\u65b9\u6cd5\n  }\n}\n<\/script><\/code><\/pre>\n
\u628a\u4e24\u4e2a\u94a9\u5b50\u6362\u4f4d\u7f6e\u4ecd\u662f\u4e24\u5904\u751f\u547d\u5468\u671f\u3002Vue 2 \u5176\u5b9e\u53ef\u4ee5\u7528 hook \u628a\u9500\u6bc1\u903b\u8f91\u5199\u5728\u6ce8\u518c\u5904\uff1a<\/p>\n
 \u5927\u4f6c\uff1a\u8fd9\u6837\u5199\u4e0d\u662f\u5f88\u597d\uff0c\u5e94\u8be5\u5c06\u76d1\u542c`resize`\u4e8b\u4ef6\u4e0e\u9500\u6bc1`resize`\u4e8b\u4ef6\u653e\u5230\u4e00\u8d77\uff0c\u73b0\u5728\u4e24\u6bb5\u4ee3\u7801\u5206\u5f00\u800c\u4e14\u76f8\u9694\u51e0\u767e\u884c\u4ee3\u7801\uff0c\u53ef\u8bfb\u6027\u6bd4\u8f83\u5dee\n \u6211\uff1a\u90a3\u6211\u628a\u4e24\u4e2a\u751f\u547d\u5468\u671f\u94a9\u5b50\u51fd\u6570\u4f4d\u7f6e\u6362\u4e00\u4e0b\uff0c\u653e\u5230\u4e00\u8d77?\n \u5927\u4f6c\uff1a `hook`\u542c\u8fc7\u6ca1\uff1f\n \u6211\uff1a`Vue3.0`\u624d\u6709\u554a\uff0c\u548b\uff0c\u54b1\u8981\u5347\u7ea7`Vue`?<\/code><\/pre>\n
export default {\n  mounted() {\n    this.chart = echarts.init(this.$el)\n    \/\/ \u8bf7\u6c42\u6570\u636e\uff0c\u8d4b\u503c\u6570\u636e \u7b49\u7b49\u4e00\u7cfb\u5217\u64cd\u4f5c...\n    \n    \/\/ \u76d1\u542c\u7a97\u53e3\u53d1\u751f\u53d8\u5316\uff0cresize\u7ec4\u4ef6\n    window.addEventListener('resize', this.$_handleResizeChart)\n    \/\/ \u901a\u8fc7hook\u76d1\u542c\u7ec4\u4ef6\u9500\u6bc1\u94a9\u5b50\u51fd\u6570\uff0c\u5e76\u53d6\u6d88\u76d1\u542c\u4e8b\u4ef6\n    this.$once('hook:beforeDestroy', () => {\n      window.removeEventListener('resize', this.$_handleResizeChart)\n    })\n  },\n  updated() {},\n  created() {},\n  methods: {\n    $_handleResizeChart() {\n      \/\/ this.chart.resize()\n    }\n  }\n}<\/code><\/pre>\n
\u7ec4\u4ef6\u5185\u53ef\u7528 $on \/ $once \u76d1\u542c\u5168\u90e8\u751f\u547d\u5468\u671f\uff0c\u4f8b\u5982 this.$on(‘hook:updated’, () => {})\u3002<\/p>\n
2. \u5916\u90e8\u76d1\u542c<\/h3>\n
\u7b2c\u4e09\u65b9\u7ec4\u4ef6\u6ca1\u6709 change<\/code> \u65f6\uff0c\u53ef\u5728\u6a21\u677f\u7528 @hook:updated<\/code> \u76d1\u542c\u5b83\u7684 updated<\/code>\u3002\u6240\u6709\u94a9\u5b50\u90fd\u652f\u6301 @hook:\u94a9\u5b50\u540d<\/code>\u3002<\/p>\n
<template>\n  <!--\u901a\u8fc7@hook:updated\u76d1\u542c\u7ec4\u4ef6\u7684updated\u751f\u547d\u94a9\u5b50\u51fd\u6570-->\n  <!--\u7ec4\u4ef6\u7684\u6240\u6709\u751f\u547d\u5468\u671f\u94a9\u5b50\u90fd\u53ef\u4ee5\u901a\u8fc7@hook:\u94a9\u5b50\u51fd\u6570\u540d \u6765\u76d1\u542c\u89e6\u53d1-->\n  <custom-select @hook:updated=\"$_handleSelectUpdated\" \/>\n<\/template>\n<script>\nimport CustomSelect from '..\/components\/custom-select'\nexport default {\n  components: {\n    CustomSelect\n  },\n  methods: {\n    $_handleSelectUpdated() {\n      console.log('custom-select\u7ec4\u4ef6\u7684updated\u94a9\u5b50\u51fd\u6570\u88ab\u89e6\u53d1')\n    }\n  }\n}\n<\/script><\/code><\/pre>\n
\u4e8c\u3001\u5c0f\u9879\u76ee\u7528 Vue.observable \u4ee3\u66ff Vuex<\/h2>\n
\u591a\u7ec4\u4ef6\u5171\u4eab\u72b6\u6001\u901a\u5e38\u4e0a Vuex\u3002\u5b98\u7f51\u4e5f\u8bf4\uff1a\u5e94\u7528\u591f\u7b80\u5355\u65f6 Vuex \u4f1a\u663e\u5f97\u7e41\u7410\u3002\u53ef\u7528 Vue 2.6 \u7684 Vue.observable<\/code> \u624b\u5199\u4e00\u4efd\u8ff7\u4f60 store\u3002<\/p>\n
\u521b\u5efa store<\/h3>\n
import Vue from 'vue'\n\/\/ \u901a\u8fc7Vue.observable\u521b\u5efa\u4e00\u4e2a\u53ef\u54cd\u5e94\u7684\u5bf9\u8c61\nexport const store = Vue.observable({\n  userInfo: {},\n  roleIds: []\n})\n\/\/ \u5b9a\u4e49 mutations, \u4fee\u6539\u5c5e\u6027\nexport const mutations = {\n  setUserInfo(userInfo) {\n    store.userInfo = userInfo\n  },\n  setRoleIds(roleIds) {\n    store.roleIds = roleIds\n  }\n}<\/code><\/pre>\n
\u5728\u7ec4\u4ef6\u4e2d\u5f15\u7528<\/h3>\n
<template>\n  <div>\n    {{ userInfo.name }}\n  <\/div>\n<\/template>\n<script>\nimport { store, mutations } from '..\/store'\nexport default {\n  computed: {\n    userInfo() {\n      return store.userInfo\n    }\n  },\n  created() {\n    mutations.setUserInfo({\n      name: '\u5b50\u541b'\n    })\n  }\n}\n<\/script><\/code><\/pre>\n
\u4e09\u3001Vue.extend\uff1a\u5f00\u53d1\u5168\u5c40\u7ec4\u4ef6<\/h2>\n
Vue.extend<\/code> \u662f\u5168\u5c40 API\uff0c\u4e1a\u52a1\u91cc\u5c11\u7528\uff1b\u505a Loading<\/code> \/ Notify<\/code> \/ Message<\/code> \u8fd9\u7c7b\u5168\u5c40\u7ec4\u4ef6\u65f6\u6b63\u597d\u7528\u4e0a\u3002element-ui \u7684 loading \u53ef\u4ee5 this.$loading()<\/code> \u518d close()<\/code>\u3002<\/p>\n
\/\/ \u663e\u793aloading\nconst loading = this.$loading()\n\/\/ \u5173\u95edloading\nloading.close()<\/code><\/pre>\n
\u8fde\u8c03\u4e24\u6b21 loading \u5374\u53ea\u51fa\u73b0\u4e00\u4e2a\uff0c\u5173\u6389\u7b2c\u4e00\u4e2a\u53e6\u4e00\u4e2a\u4e5f\u6ca1\u4e86\u2014\u2014\u8fd9\u662f\u5355\u4f8b\uff1a<\/p>\n
const loading = this.$loading()\nconst loading1 = this.$loading()\nsetTimeout(() => {\n  loading.close()\n}, 1000 * 3)<\/code><\/pre>\n
\u4e0b\u9762\u7528 Vue.extend<\/code> + \u5355\u4f8b\u5b9e\u73b0\u540c\u6837\u7684 loading\u3002<\/p>\n
\u5f00\u53d1 loading \u7ec4\u4ef6<\/h3>\n
<template>\n  <transition name=\"custom-loading-fade\">\n    <!--loading\u8499\u7248-->\n    <div v-show=\"visible\" class=\"custom-loading-mask\">\n      <!--loading\u4e2d\u95f4\u7684\u56fe\u6807-->\n      <div class=\"custom-loading-spinner\">\n        <i class=\"custom-spinner-icon\"><\/i>\n        <!--loading\u4e0a\u9762\u663e\u793a\u7684\u6587\u5b57-->\n        <p class=\"custom-loading-text\">{{ text }}<\/p>\n      <\/div>\n    <\/div>\n  <\/transition>\n<\/template>\n<script>\nexport default {\n  props: {\n  \/\/ \u662f\u5426\u663e\u793aloading\n    visible: {\n      type: Boolean,\n      default: false\n    },\n    \/\/ loading\u4e0a\u9762\u7684\u663e\u793a\u6587\u5b57\n    text: {\n      type: String,\n      default: ''\n    }\n  }\n}\n<\/script><\/code><\/pre>\n
\u76f4\u63a5\u5f53\u5c40\u90e8\u7ec4\u4ef6\u7528\u65f6\u662f\u8fd9\u6837\uff0c\u4f46\u8fd8\u8fbe\u4e0d\u5230\u300cJS \u8c03\u7528 + \u5168\u5c4f\u906e\u7f69\u300d\uff1a<\/p>\n
<template>\n  <div class=\"component-code\">\n    <!--\u5176\u4ed6\u4e00\u5806\u4ee3\u7801-->\n    <custom-loading :visible=\"visible\" text=\"\u52a0\u8f7d\u4e2d\" \/>\n  <\/div>\n<\/template>\n<script>\nexport default {\n  data() {\n    return {\n      visible: false\n    }\n  }\n}\n<\/script><\/code><\/pre>\n
    \n
  1. \n
    \u53ef\u4ee5\u901a\u8fc7 JS \u76f4\u63a5\u8c03\u7528\u65b9\u6cd5\u6765\u663e\u793a\u3001\u5173\u95ed<\/section>\n<\/li>\n
  2. \n
    loading<\/code> \u53ef\u4ee5\u5c06\u6574\u4e2a\u9875\u9762\u5168\u90e8\u906e\u7f69\u8d77\u6765<\/section>\n<\/li>\n<\/ol>\n
    \u901a\u8fc7 Vue.extend \u8f6c\u6210\u5168\u5c40\u7ec4\u4ef6<\/h3>\n
    1. \u628a\u7ec4\u4ef6\u7684 props<\/code> \u6539\u6210 data<\/code>\uff1a<\/p>\n
    export default {\n  data() {\n    return {\n      text: '',\n      visible: false\n    }\n  }\n}<\/code><\/pre>\n
    2. \u7528 Vue.extend \u5305\u88c5\uff1a<\/p>\n
    \/\/ loading\/index.js\nimport Vue from 'vue'\nimport LoadingComponent from '.\/loading.vue'\n\/\/ \u901a\u8fc7Vue.extend\u5c06\u7ec4\u4ef6\u5305\u88c5\u6210\u4e00\u4e2a\u5b50\u7c7b\nconst LoadingConstructor = Vue.extend(LoadingComponent)\nlet loading = undefined\nLoadingConstructor.prototype.close = function() {\n  \/\/ \u5982\u679cloading \u6709\u5f15\u7528\uff0c\u5219\u53bb\u6389\u5f15\u7528\n  if (loading) {\n    loading = undefined\n  }\n  \/\/ \u5148\u5c06\u7ec4\u4ef6\u9690\u85cf\n  this.visible = false\n  \/\/ \u5ef6\u8fdf300\u6beb\u79d2\uff0c\u7b49\u5f85loading\u5173\u95ed\u52a8\u753b\u6267\u884c\u5b8c\u4e4b\u540e\u9500\u6bc1\u7ec4\u4ef6\n  setTimeout(() => {\n    \/\/ \u79fb\u9664\u6302\u8f7d\u7684dom\u5143\u7d20\n    if (this.$el && this.$el.parentNode) {\n      this.$el.parentNode.removeChild(this.$el)\n    }\n    \/\/ \u8c03\u7528\u7ec4\u4ef6\u7684$destroy\u65b9\u6cd5\u8fdb\u884c\u7ec4\u4ef6\u9500\u6bc1\n    this.$destroy()\n  }, 300)\n}\nconst Loading = (options = {}) => {\n  \/\/ \u5982\u679c\u7ec4\u4ef6\u5df2\u6e32\u67d3\uff0c\u5219\u8fd4\u56de\u5373\u53ef\n  if (loading) {\n    return loading\n  }\n  \/\/ \u8981\u6302\u8f7d\u7684\u5143\u7d20\n  const parent = document.body\n  \/\/ \u7ec4\u4ef6\u5c5e\u6027\n  const opts = {\n    text: '',\n    ...options\n  }\n  \/\/ \u901a\u8fc7\u6784\u9020\u51fd\u6570\u521d\u59cb\u5316\u7ec4\u4ef6 \u76f8\u5f53\u4e8e new Vue()\n  const instance = new LoadingConstructor({\n    el: document.createElement('div'),\n    data: opts\n  })\n  \/\/ \u5c06loading\u5143\u7d20\u6302\u5728\u5230parent\u4e0a\u9762\n  parent.appendChild(instance.$el)\n  \/\/ \u663e\u793aloading\n  Vue.nextTick(() => {\n    instance.visible = true\n  })\n  \/\/ \u5c06\u7ec4\u4ef6\u5b9e\u4f8b\u8d4b\u503c\u7ed9loading\n  loading = instance\n  return instance\n}\nexport default Loading<\/code><\/pre>\n
    3. \u9875\u9762\u91cc\u4f7f\u7528\uff1a<\/p>\n
    import Loading from '.\/loading\/index.js'\nexport default {\n  created() {\n    const loading = Loading({ text: '\u6b63\u5728\u52a0\u8f7d\u3002\u3002\u3002' })\n    \/\/ \u4e09\u79d2\u949f\u540e\u5173\u95ed\n    setTimeout(() => {\n      loading.close()\n    }, 3000)\n  }\n}<\/code><\/pre>\n
    \u8981\u50cf element-ui \u4e00\u6837\u6302\u5230 Vue.prototype<\/code>\uff0c\u901a\u8fc7 this.$loading<\/code> \u8c03\u7528\uff1a<\/p>\n
    \u6302\u5230 Vue.prototype<\/h3>\n
    Vue.prototype.$loading = Loading\n\/\/ \u5728export\u4e4b\u524d\u5c06Loading\u65b9\u6cd5\u8fdb\u884c\u7ed1\u5b9a\nexport default Loading\n\/\/ \u5728\u7ec4\u4ef6\u5185\u4f7f\u7528\nthis.$loading()<\/code><\/pre>\n
    \u56db\u3001\u81ea\u5b9a\u4e49\u6307\u4ee4\uff0c\u4ece\u5e95\u5c42\u89e3\u51b3\u95ee\u9898<\/h2>\n
    loading \u505a\u5b8c\u540e\uff0c\u540c\u4e8b\u53c8\u8981\uff1a\u80fd\u6302\u5230\u67d0\u4e2a\u5143\u7d20\u4e0a\uff08\u4e0d\u53ea\u5168\u5c4f\uff09\uff0c\u4ee5\u53ca\u7528\u6307\u4ee4\u5728\u6307\u5b9a\u5143\u7d20\u4e0a\u6302 loading\u3002<\/p>\n
    \u5f00\u53d1 v-loading \u6307\u4ee4<\/h3>\n
    import Vue from 'vue'\nimport LoadingComponent from '.\/loading'\n\/\/ \u4f7f\u7528 Vue.extend\u6784\u9020\u7ec4\u4ef6\u5b50\u7c7b\nconst LoadingContructor = Vue.extend(LoadingComponent)\n\/\/ \u5b9a\u4e49\u4e00\u4e2a\u540d\u4e3aloading\u7684\u6307\u4ee4\nVue.directive('loading', {\n  \/**\n   * \u53ea\u8c03\u7528\u4e00\u6b21\uff0c\u5728\u6307\u4ee4\u7b2c\u4e00\u6b21\u7ed1\u5b9a\u5230\u5143\u7d20\u65f6\u8c03\u7528\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u505a\u4e00\u4e9b\u521d\u59cb\u5316\u7684\u8bbe\u7f6e\n   * @param {*} el \u6307\u4ee4\u8981\u7ed1\u5b9a\u7684\u5143\u7d20\n   * @param {*} binding \u6307\u4ee4\u4f20\u5165\u7684\u4fe1\u606f\uff0c\u5305\u62ec {name:'\u6307\u4ee4\u540d\u79f0', value: '\u6307\u4ee4\u7ed1\u5b9a\u7684\u503c',arg: '\u6307\u4ee4\u53c2\u6570 v-bind:text \u5bf9\u5e94 text'}\n   *\/\n  bind(el, binding) {\n    const instance = new LoadingContructor({\n      el: document.createElement('div'),\n      data: {}\n    })\n    el.appendChild(instance.$el)\n    el.instance = instance\n    Vue.nextTick(() => {\n      el.instance.visible = binding.value\n    })\n  },\n  \/**\n   * \u6240\u5728\u7ec4\u4ef6\u7684 VNode \u66f4\u65b0\u65f6\u8c03\u7528\n   * @param {*} el\n   * @param {*} binding\n   *\/\n  update(el, binding) {\n    \/\/ \u901a\u8fc7\u5bf9\u6bd4\u503c\u7684\u53d8\u5316\u5224\u65adloading\u662f\u5426\u663e\u793a\n    if (binding.oldValue !== binding.value) {\n      el.instance.visible = binding.value\n    }\n  },\n  \/**\n   * \u53ea\u8c03\u7528\u4e00\u6b21\uff0c\u5728 \u6307\u4ee4\u4e0e\u5143\u7d20\u89e3\u7ed1\u65f6\u8c03\u7528\n   * @param {*} el\n   *\/\n  unbind(el) {\n    const mask = el.instance.$el\n    if (mask.parentNode) {\n      mask.parentNode.removeChild(mask)\n    }\n    el.instance.$destroy()\n    el.instance = undefined\n  }\n})<\/code><\/pre>\n
    \u5728\u5143\u7d20\u4e0a\u4f7f\u7528<\/h3>\n
    <template>\n  <div v-loading=\"visible\"><\/div>\n<\/template>\n<script>\nexport default {\n  data() {\n    return {\n      visible: false\n    }\n  },\n  created() {\n    this.visible = true\n    fetch().then(() => {\n      this.visible = false\n    })\n  }\n}\n<\/script><\/code><\/pre>\n
    \u54ea\u4e9b\u573a\u666f\u9002\u5408\u81ea\u5b9a\u4e49\u6307\u4ee4<\/h3>\n
      \n
    1. \n
      \u4e3a\u7ec4\u4ef6\u6dfb\u52a0 loading<\/code> \u6548\u679c<\/section>\n<\/li>\n
    2. \n
      \u6309\u94ae\u7ea7\u6743\u9650 v-permission<\/code><\/section>\n<\/li>\n
    3. \n
      \u4ee3\u7801\u57cb\u70b9\uff0c\u6309\u64cd\u4f5c\u7c7b\u578b\u5b9a\u4e49\u6307\u4ee4<\/section>\n<\/li>\n
    4. \n
      input \u81ea\u52a8\u805a\u7126<\/section>\n<\/li>\n
    5. \n
      \u5176\u4ed6\u7c7b\u4f3c\u300c\u58f0\u660e\u5f0f\u64cd\u4f5c DOM\u300d\u7684\u9700\u6c42<\/section>\n<\/li>\n<\/ol>\n
      \u4e94\u3001watch\uff1a\u7acb\u5373\u89e6\u53d1\u4e0e\u6df1\u5ea6\u76d1\u542c<\/h2>\n
      \u57fa\u7840\u7528\u6cd5<\/h3>\n
      \u5217\u8868\u9875\u5e0c\u671b\u641c\u7d22\u6846\u4e00\u6539\u5c31\u67e5\uff0c\u9664\u4e86\u542c change<\/code>\uff0c\u4e5f\u53ef\u4ee5 watch<\/code> \u5173\u952e\u5b57\uff1a<\/p>\n
      <template>\n  <!--\u6b64\u5904\u793a\u4f8b\u4f7f\u7528\u4e86element-ui-->\n  <div>\n    <div>\n      <span>\u641c\u7d22<\/span>\n      <input v-model=\"searchValue\" \/>\n    <\/div>\n    <!--\u5217\u8868\uff0c\u4ee3\u7801\u7701\u7565-->\n  <\/div>\n<\/template>\n<script>\nexport default {\n  data() {\n    return {\n      searchValue: ''\n    }\n  },\n  watch: {\n    \/\/ \u5728\u503c\u53d1\u751f\u53d8\u5316\u4e4b\u540e\uff0c\u91cd\u65b0\u52a0\u8f7d\u6570\u636e\n    searchValue(newValue, oldValue) {\n      \/\/ \u5224\u65ad\u641c\u7d22\n      if (newValue !== oldValue) {\n        this.$_loadData()\n      }\n    }\n  },\n  methods: {\n    $_loadData() {\n      \/\/ \u91cd\u65b0\u52a0\u8f7d\u6570\u636e\uff0c\u6b64\u5904\u9700\u8981\u901a\u8fc7\u51fd\u6570\u9632\u6296\n    }\n  }\n}\n<\/script><\/code><\/pre>\n
      \u7acb\u5373\u89e6\u53d1<\/h3>\n
      \u503c\u53d8\u5316\u4f1a\u52a0\u8f7d\uff0c\u4f46\u9996\u5c4f\u8fd8\u8981\u5728 created<\/code> \/ mounted<\/code> \u518d\u8c03\u4e00\u6b21\u3002\u7ed9 watch \u914d immediate: true<\/code> \u5373\u53ef\uff0c\u521d\u6b21 newValue<\/code> \u4e3a\u7a7a\u4e32\u3001oldValue<\/code> \u4e3a undefined<\/code>\u3002<\/p>\n
      \/\/ \u6539\u9020watch\nexport default {\n  watch: {\n    \/\/ \u5728\u503c\u53d1\u751f\u53d8\u5316\u4e4b\u540e\uff0c\u91cd\u65b0\u52a0\u8f7d\u6570\u636e\n    searchValue: {\n    \/\/ \u901a\u8fc7handler\u6765\u76d1\u542c\u5c5e\u6027\u53d8\u5316, \u521d\u6b21\u8c03\u7528 newValue\u4e3a\"\"\u7a7a\u5b57\u7b26\u4e32\uff0c oldValue\u4e3a undefined\n      handler(newValue, oldValue) {\n        if (newValue !== oldValue) {\n          this.$_loadData()\n        }\n      },\n      \/\/ \u914d\u7f6e\u7acb\u5373\u6267\u884c\u5c5e\u6027\n      immediate: true\n    }\n  }\n}<\/code><\/pre>\n
      \u6df1\u5ea6\u76d1\u542c<\/h3>\n
      \u8868\u5355\u4efb\u610f\u4e00\u9879\u6539\u4e86\u5c31\u8981\u6807\u300c\u5df2\u4fee\u6539\u300d\u3002\u9010\u4e2a\u5c5e\u6027 watch \u592a\u70e6\uff0c\u7528 deep: true<\/code>\u3002\u6ce8\u610f\u5bf9\u8c61\u5f15\u7528\u76f8\u540c\uff0cnewValue<\/code> \u548c oldValue<\/code> \u4f1a\u4e00\u76f4\u76f8\u7b49\u3002<\/p>\n
      export default {\n  data() {\n    return {\n      formData: {\n        name: '',\n        sex: '',\n        age: 0,\n        deptId: ''\n      }\n    }\n  },\n  watch: {\n    \/\/ \u5728\u503c\u53d1\u751f\u53d8\u5316\u4e4b\u540e\uff0c\u91cd\u65b0\u52a0\u8f7d\u6570\u636e\n    formData: {\n      \/\/ \u9700\u8981\u6ce8\u610f\uff0c\u56e0\u4e3a\u5bf9\u8c61\u5f15\u7528\u7684\u539f\u56e0\uff0c newValue\u548coldValue\u7684\u503c\u4e00\u76f4\u76f8\u7b49\n      handler(newValue, oldValue) {\n        \/\/ \u5728\u8fd9\u91cc\u6807\u8bb0\u9875\u9762\u7f16\u8f91\u72b6\u6001\n      },\n      \/\/ \u901a\u8fc7\u6307\u5b9adeep\u5c5e\u6027\u4e3atrue, watch\u4f1a\u76d1\u542c\u5bf9\u8c61\u91cc\u9762\u6bcf\u4e00\u4e2a\u503c\u7684\u53d8\u5316\n      deep: true\n    }\n  }\n}<\/code><\/pre>\n
      \u516d\u3001\u51fd\u6570\u5f0f\u7ec4\u4ef6<\/h2>\n
      \u51fd\u6570\u5f0f\u7ec4\u4ef6\uff1a\u65e0\u5185\u90e8\u72b6\u6001\u3001\u65e0\u751f\u547d\u5468\u671f\u3001\u65e0 this<\/code>\uff08\u4e0d\u5fc5\u5b9e\u4f8b\u5316\uff09\u3002\u7eaf\u5c55\u793a\u7684\u8be6\u60c5\u9875\u3001\u5217\u8868\u9879\uff0c\u53ea\u6e32\u67d3\u5916\u90e8\u6570\u636e\u65f6\u53ef\u4ee5\u8003\u8651\u3002<\/p>\n
      \u793a\u4f8b<\/h3>\n
      export default {\n  \/\/ \u901a\u8fc7\u914d\u7f6efunctional\u5c5e\u6027\u6307\u5b9a\u7ec4\u4ef6\u4e3a\u51fd\u6570\u5f0f\u7ec4\u4ef6\n  functional: true,\n  \/\/ \u7ec4\u4ef6\u63a5\u6536\u7684\u5916\u90e8\u5c5e\u6027\n  props: {\n    avatar: {\n      type: String\n    }\n  },\n  \/**\n   * \u6e32\u67d3\u51fd\u6570\n   * @param {*} h\n   * @param {*} context \u51fd\u6570\u5f0f\u7ec4\u4ef6\u6ca1\u6709this, props, slots\u7b49\u90fd\u5728context\u4e0a\u9762\u6302\u7740\n   *\/\n  render(h, context) {\n    const { props } = context\n    if (props.avatar) {\n      return <img src={props.avatar}><\/img>\n    }\n    return <img src=\"default-avatar.png\"><\/img>\n  }\n}<\/code><\/pre>\n
      \u4e0a\u4f8b\u662f\u5934\u50cf\u7ec4\u4ef6\uff1a\u6709\u4f20\u5165\u5c31\u663e\u793a\uff0c\u5426\u5219\u9ed8\u8ba4\u56fe\u3002render<\/code> \u662f JSX \u5199\u6cd5\u3002<\/p>\n
      \u4e3a\u4ec0\u4e48\u7528<\/h3>\n
        \n
      1. \n
        \u4e0d\u5b9e\u4f8b\u5316\u3001\u65e0\u72b6\u6001\u3001\u65e0\u751f\u547d\u5468\u671f\uff0c\u6e32\u67d3\u901a\u5e38\u5feb\u4e8e\u666e\u901a\u7ec4\u4ef6<\/section>\n<\/li>\n
      2. \n
        \u7ed3\u6784\u66f4\u7b80\u5355\uff0c\u4ee3\u7801\u66f4\u6e05\u6670<\/section>\n<\/li>\n<\/ol>\n
        \u548c\u666e\u901a\u7ec4\u4ef6\u7684\u533a\u522b<\/h3>\n
          \n
        1. \n
          \u58f0\u660e\u65f6\u6307\u5b9a functional<\/code><\/section>\n<\/li>\n
        2. \n
          \u6ca1\u6709 this<\/code>\uff0cprops \/ slots \u5728 render<\/code> \u7b2c\u4e8c\u4e2a\u53c2\u6570 context<\/code> \u4e0a<\/section>\n<\/li>\n
        3. \n
          \u6ca1\u6709\u751f\u547d\u5468\u671f\uff0c\u4e5f\u4e0d\u80fd\u7528\u8ba1\u7b97\u5c5e\u6027\u3001watch<\/code><\/section>\n<\/li>\n
        4. \n
          \u4e0d\u80fd $emit<\/code>\uff0c\u53ea\u80fd context.listeners.click<\/code> \u8c03\u5916\u90e8\u4e8b\u4ef6<\/section>\n<\/li>\n
        5. \n
          ref<\/code> \u62ff\u5230\u7684\u662f HTMLElement<\/code><\/section>\n<\/li>\n
        6. \n
          props<\/code> \u53ef\u4e0d\u663e\u5f0f\u58f0\u660e\uff0c\u672a\u58f0\u660e\u5c5e\u6027\u4f1a\u9690\u5f0f\u5f53 prop\uff1b\u666e\u901a\u7ec4\u4ef6\u672a\u58f0\u660e\u7684\u8fdb $attrs<\/code>\uff0c\u5e76\u6302\u5230\u6839\u5143\u7d20\uff08\u53ef\u7528 inheritAttrs<\/code> \u7981\u6b62\uff09<\/section>\n<\/li>\n<\/ol>\n
          \u4e0d\u7528 JSX \u884c\u4e0d\u884c<\/h3>\n
          Vue 2.5 \u4e4b\u540e\u53ef\u7528\u6a21\u677f\u58f0\u660e\u51fd\u6570\u5f0f\u7ec4\u4ef6\uff0c\u5728 template<\/code> \u4e0a\u52a0 functional<\/code>\uff1a<\/p>\n
          <!--\u5728template \u4e0a\u9762\u6dfb\u52a0 functional\u5c5e\u6027-->\n<template functional>\n  <img :src=\"avatar ? avatar : 'default-avatar.png'\" \/>\n<\/template>\n<!--\u6839\u636e\u4e0a\u4e00\u8282\u7b2c\u516d\u6761\uff0c\u53ef\u4ee5\u7701\u7565\u58f0\u660eprops--><\/code><\/pre>\n\n\n\n\n\n\n\n\n\n\n\n
          \u6280\u5de7<\/th>\n\u9002\u7528<\/th>\n<\/tr>\n<\/thead>\n
          hook:beforeDestroy<\/code><\/td>\n\u540c\u4e00\u5904\u6ce8\u518c\u4e0e\u6ce8\u9500\u526f\u4f5c\u7528<\/td>\n<\/tr>\n
          @hook:updated<\/code><\/td>\n\u5916\u90e8\u542c\u7b2c\u4e09\u65b9\u7ec4\u4ef6\u751f\u547d\u5468\u671f<\/td>\n<\/tr>\n
          Vue.observable<\/code><\/td>\n\u5c0f\u9879\u76ee\u5171\u4eab\u72b6\u6001\uff0c\u4e0d\u5fc5\u4e0a Vuex<\/td>\n<\/tr>\n
          Vue.extend<\/code> + \u5355\u4f8b<\/td>\n\u5168\u5c40 Loading \/ Message<\/td>\n<\/tr>\n
          v-loading<\/code><\/td>\n\u6307\u4ee4\u628a Loading \u6302\u5230\u6307\u5b9a\u5143\u7d20<\/td>\n<\/tr>\n
          immediate<\/code> \/ deep<\/code><\/td>\n\u9996\u5c4f\u52a0\u8f7d\u3001\u8868\u5355\u810f\u68c0\u67e5<\/td>\n<\/tr>\n
          functional<\/td>\n\u65e0\u72b6\u6001\u5c55\u793a\u7ec4\u4ef6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n
          \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1aVue 2 \u91cc\u7528 hookEvent \u628a\u526f\u4f5c\u7528\u6536\u5728\u4e00\u5904\uff0c\u5c0f\u9879\u76ee\u7528 observable \u7ba1\u72b6\u6001\uff0c\u5168\u5c40\u6d6e\u5c42\u7528 extend + \u5355\u4f8b\uff0c\u6307\u4ee4\u89e3\u51b3\u58f0\u660e\u5f0f DOM\uff0cwatch \u914d immediate\/deep\uff0c\u7eaf\u5c55\u793a\u518d\u8003\u8651\u51fd\u6570\u5f0f\u7ec4\u4ef6\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
          \u6bcf\u5929\u5199\u91cd\u590d\u4ee3\u7801\u3001\u5f53 CV \u4ed4\uff0c\u6548\u7387\u4e0a\u4e0d\u53bb\u3002\u4e0a\u4e00\u7bc7\u300a\u7edd\u5bf9\u5e72\u8d27~\uff01\u5b66\u4f1a\u8fd9\u4e9bVue\u5c0f\u6280\u5de7\uff0c\u53ef\u4ee5\u65e9\u70b9\u4e0b\u73ed\u548c\u5973\u795e\u7ea6\u4f1a\u4e86\u300b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[106,105],"tags":[205],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2996"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2996"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2996\/revisions"}],"predecessor-version":[{"id":2999,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2996\/revisions\/2999"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}