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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <meta charset="UTF-8" />
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
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+ <title>Document</title>
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+ </head>
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+ <body>
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+ <div id="app">
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+ 关键字搜索:
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+ <input type="text" placeholder="请输入关键字" v-model="keywords" />
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+ <br />
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+ <div id="main" v-for="(item,index) in newList" :key="index">
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+ {{index + 1}}.我叫{{item.name}}--今年{{item.age}}了--我是{{item.sex}}孩
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+ </div>
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+ </div>
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+ <script src="./vue.js"></script>
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+ <script>
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+ var app = new Vue({
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+ el: "#app",
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+ data: {
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+ arr: [
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+ {
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+ name: "Lucy",
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+ age: 11,
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+ sex: "女",
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+ },
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+ {
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+ name: "LiLi",
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+ age: 31,
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+ sex: "男",
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+ },
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+ {
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+ name: "八戒",
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+ age: 21,
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+ sex: "男",
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+ },
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+ {
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+ name: "八卦",
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+ age: 23,
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+ sex: "男",
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+ },
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+ {
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+ name: "孙悟空",
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+ age: 27,
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+ sex: "男",
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+ },
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+ {
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+ name: "唐僧",
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+ age: 33,
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+ sex: "女",
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+ },
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+ ],
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+ keywords: "欧文",
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+ newList:[]
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+ },
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+ watch: {
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+ keywords:{
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+ immediate: true,
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+ deep: true,
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+ handler(val) {
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+ this.newList = this.arr.filter((item) => {
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+ return item.name.indexOf(val) !== -1;
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+ })
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+ }
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+ }
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+ // keywords(newValue,oldValue) {
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+ // console.log(newValue)
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+ // console.log(oldValue)
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+ // }
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+ }
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+ });
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+ </script>
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+ </body>
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+</html>
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