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源代码:
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script> </head> <body> <body> <div id="app"> <p>全选<input type="checkbox" v-model="checks" @change="Numlist()"> {{ checks }}</p> <p> <label v-for="(list,index) in checkList"> <input type="checkbox" v-model="checksListOn" :value="list.name">{{ list.name }} </label> </p> <p>{{ checksListOn }}</p> </div> <script> var app = new Vue({ el:'#app', data:{ checks:false, checkList:[ {id:1, name:'苹果'}, {id:2, name:'香蕉'}, {id:3, name:'栗子'}, {id:4, name:'橘子'} ], checksListOn:[] }, methods:{ Numlist :function(){ if(this.checks){ var listArr=[]; for(var i=0;i<this.checkList.length;i++){ listArr.push(this.checkList[i].name); } this.checksListOn = listArr; }else { this.checksListOn = [] } } }, watch:{ "checksListOn":function () { if(this.checksListOn.length == this.checkList.length){ this.checks = true }else { this.checks = false } } }, }) </script></body> </html>
运行结果