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                ~~~ <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>非父子組件間的傳值(Bus,總線,或稱為發布訂閱模式,或稱觀察者模式)</title> <script src="vue.js"></script> </head> <body> <!--非父子組件間的傳值的方式有兩種--> <!--1.vuex--> <!--2.bus(總線)--> <!--mounted 勾子--> <div id="root"> <child content="Hello"></child> <child content="World"></child> </div> <script> Vue.prototype.bus = new Vue(); Vue.component('child', { data(){ return { content_:this.content } }, props: { content: String }, template: '<div @click="handleClick">{{content_}}</div>', methods: { handleClick() { this.bus.$emit('change', this.content_) } }, mounted() { let _this = this this.bus.$on('change', function (msg) { _this.content_ = msg }) }, }); var vm = new Vue({ el: '#root' }) </script> </body> </html> ~~~
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