<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <div id="app"> <div>父组件</div> <test-tom></test-tom> <test-jerry></test-jerry> </div> <script type="text/javascript" src="./js/vue.js"></script> <script> //提供事件中心 var hub = new Vue(); Vue.component('test-tom', { data: function() { return { num: 0 } }, template: `<div>TOM:{{num}} <div><button @click='handle'>点击</button></div></div>`, methods: { handle: function() { //触发兄弟事件 hub.$emit('jerry-event', 1); } }, mounted: function() { hub.$on('tom-event', (val) => { this.num += val; }); } }); Vue.component('test-jerry', { data: function() { return { num: 0 } }, template: `<div>JERRY:{{num}} <div><button @click='handle'>点击</button></div></div>`, methods: { handle: function() { hub.$emit('tom-event', 2); } }, mounted: function() { hub.$on('jerry-event', (val) => { this.num += val; }); } }) var vm = new Vue({ el: '#app', data: { }, }) </script> </body> </html>
