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  • Vue组件相关

     一  组建的注册

      1.全局注册

     1  <div id="app">
     2       <wdb></wdb>
     3  </div>
     4  <hr>
     5  <div id="app1">
     6      <wdb></wdb>
     7      <wdb></wdb>
     8  </div>
     9  <script>
    10     Vue.component('wdb',{
    11         template:`<div><h1>这是wdb的地盘</h1></div>>`,
    12      });
    13     const app=new Vue({
    14       el:'#app',
    15      });
    16     const app2=new Vue({
    17             el:'#app1',
    18      })
    19  </script>

      

      2.局部注册      实例化的vue对象中注册

     1 <div id="app">
     2     <my_component></my_component>
     3 </div>
     4 <script>
     5     var Child={
     6         template:`<div><h1>{{name}}</h1></div>`,
     7         data:function () {          ******data必须是函数(方法)
     8             return {
     9                 name:'wdb',
    10             }
    11         }
    12     };
    13     const app=new Vue({
    14         el:'#app',
    15         components:{
    16              'my_component':Child,
    17         }
    18     })
    19 </script>

      3.子组件的注册

     1 <div id="app">
     2     <father></father>
     3 </div>
     4 <script>
     5     let child = {
     6         template: `<div><h2>这是子组件</h2></div>`,
     7     };
     8     let father = {
     9         template: `<div>
    10                     <h1>这是父组件</h1>
    11                     <child></child>
    12                     </div>`,
    13         components: {
    14             child: child
    15         }
    16     };
    17 
    18     const app = new Vue({
    19         el: "#app",
    20         components: {
    21             father: father
    22         }
    23     })
    24 </script>

    二 组件之间的通信

      1.父子通信

     1 <div id="app">
     2     <father></father>
     3 </div>
     4 <script>
     5     let child={
     6         template:`<div>
     7                         <h2>这是子组件</h2>
     8                         <p>父亲给了我{{money}}美元</p>
     9                     </div>`,
    10         props:['money']
    11     };
    12     let father={
    13         template:`<div>
    14                     <h1>这是父组件</h1>
    15                     <child :money="num"></child>
    16                 </div>
    17                 `,
    18         data:function () {
    19             return {
    20                 num:100,
    21                 }
    22             },
    23             components:{
    24                 child:child,
    25             }
    26         };
    27     const app=new Vue({
    28         el:'#app',
    29         components: {father:father,}
    30         })
    31 </script>

        

      2.子父通信

     1 <div id="app">
     2     <father></father>
     3 </div>
     4 <script>
     5     let child={
     6         template:`<div>
     7                     <h2>这是子组件</h2>
     8                     <button @click="my_click">点我发送信息</button>
     9                 </div>`,
    10         methods:{
    11             my_click:function () {
    12                 this.$emit('son_say','爸,你要当爷爷了');
    13             }
    14         }
    15     };
    16     let father={
    17          template: `<div>
    18                 <h1>这是父组件</h1>
    19                 <!--// 接收这个事件-->
    20                 <child @son_say="my_son_say"></child>
    21                 <p>老婆~~你儿子说~~{{msg}}</p>
    22                 </div>`,
    23          components: {
    24             child: child
    25         },
    26         data(){
    27              return{
    28                  msg:''
    29              }
    30         },
    31         methods: {
    32              my_son_say:function (data) {
    33                  this.msg=data;
    34              }
    35         }
    36     };
    37     const app=new Vue({
    38         el:'#app',
    39         components:{
    40             father:father,
    41         }
    42     })
    43 </script>

        3.非父子通信

     1 <div id="app">
     2     <wdb class="wdb"></wdb>
     3     <zhwl class="zh"></zhwl>
     4 </div>
     5 <script>
     6     let middle_tool=new Vue();
     7     let wdb={
     8         template:`<div>
     9                     <h1>这是王同学</h1>
    10                     <button @click="w_click">点我给张同学发送信息</button>
    11                     </div>`,
    12         methods:{
    13             w_click:function () {
    14                 middle_tool.$emit('houhou','花大姐记得买票')
    15             }
    16         }
    17     };
    18     let zhwl={
    19         template: `<div>
    20                         <h1>这是张同学</h1>
    21                         <P>王同学对我说{{say}}</P>
    22                     </div>`,
    23         data(){
    24             return{
    25                 say:'',
    26             }
    27         },
    28         mounted(){
    29             let that=this;
    30             middle_tool.$on('houhou',function (data) {
    31                 that.say=data;
    32             })
    33         }
    34     };
    35     const app=new Vue({
    36         el:'#app',
    37         components:{
    38             zhwl:zhwl,
    39             wdb:wdb,
    40         }
    41     })
    42 </script>
    View Code

    三 混合     重复功能和数据的储存器

     1 <div id="app">
     2     <com_1></com_1>
     3     <com_2></com_2>
     4 </div>
     5 <script>
     6     let base = {
     7         data(){
     8             return{
     9                 is_show: false
    10             }
    11         },
    12         methods: {
    13             show: function () {
    14                 this.is_show = true
    15             },
    16             hide: function () {
    17                 this.is_show = false
    18             }
    19         }
    20     };
    21     let com_1 = {
    22         template: `<div>
    23                     <h1 v-show="is_show">这是第一个组件</h1>
    24                     <button @click="show">点我显示</button>
    25                     <button @click="hide">点我隐藏</button>
    26                     </div>`,
    27         data(){
    28             return{
    29                 is_show: true
    30             }
    31         },
    32         mixins: [base]
    33     };
    34     let com_2 = {
    35         template: `<div>
    36                         <h1 v-show="is_show">这是第二个组件</h1>
    37                         <button @mouseenter="show" @mouseleave="hide">鼠标移入显示移出隐藏</button>
    38                     </div>`,
    39       minxins: [base]
    40     };
    41 
    42     const app = new Vue({
    43         el: "#app",
    44         components: {
    45             com_1: com_1,
    46             com_2: com_2
    47         }
    48     })
    49 </script>

    四 插槽  插槽是一套内容分发的API,在组件中,<slot>作为内容承载分发的出口

     1 <div id="app">
     2     <com>
     3         <div slot="title">python</div>
     4         <div slot="article">很贵 很难学  常人勿扰</div>
     5     </com>
     6     <com>
     7         <div slot="title">linux</div>
     8         <div slot="article">每天对着黑屏发呆吧</div>
     9     </com>
    10 </div>
    11 <script>
    12     let com = {
    13         template: `<div>
    14                     <h1>路飞学城</h1>
    15                     <slot name="title"></slot>
    16                     <slot name="article"></slot>
    17                     </div>`,
    18     };
    19     const app = new Vue({
    20         el: "#app",
    21         components: {
    22             com: com
    23         }
    24     })
    25 </script>
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  • 原文地址:https://www.cnblogs.com/wdbgqq/p/9842647.html
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