Vue.js父子通信之所有方法和数据共享

<!DOCTYPE html>

  <html >

  <head>

    <meta charset="UTF-8">

    <title>parentChildComponent</title>

    <script src="js/vue.js"></script>

    <template ></child>

      </div>

    </template>

    <template >

      <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 >

      <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()