Vue.js父子通信之所有方法和数据共享

<!DOCTYPE html>  <html lang="en">  <head>     <meta charset="UTF-8">     <title>parentChildComponent</title>     <script src="js/vue.js"></script>

<template id="parent">       <div>         I am parent component !{{msg}};I accept :{{msg2}}         <hr>         <child ref="child"></child>       </div>     </template>

<template id="child">       <div>         I am child component !{{msg}};I accept :{{msg2}}       </div>     </template>

</head>  <body>   <script>     window.onload=function(){       let child={         template:'#child',         data(){           return {             msg:'Data of child !',             msg2:''           }         },         mounted(){           this.msg2=this.$parent.msg;         }       };       let parent={         template:'#parent',         components:{             child         },         data(){           return {             msg:'Data of parent !',             msg2:''           }         },         mounted(){           this.msg2=this.$refs.child.msg         }       };       new Vue({         el:'#app',         components:{             parent         }       });     } </script>     <div id="app">       <parent></parent>     </div></body></html>

  打通父子之间所有数据和方法的共享:      父模板:<child ref="子名称"></child>      父访问子: 父组件: this.$refs.子名称.子数据/方法名()      子访问父: 子组件: this.$parent.子数据/方法名()