VUE框架实现过滤查询将筛选后的数组信息展示在页面上------VUE框架-CFANZ编程社区

VUE框架实现过滤查询将筛选后的数组信息展示在页面上------VUE框架
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
    <style>
        th,td{border: 1px solid black;}
    </style>
</head>
<body>
    <div id="app">
        <input type="text" v-model="msg"/>
        <table>
            <tr>
                <th>序号</th>
                <th>英雄</th>
                <th>能量值</th>
                <th>选择</th>
            </tr>
            <!-- 这里遍历新数组 -->
            <tr v-for="(hero,index) in newH" :key="hero.id">
                <td>{{index}}</td>
                <td>{{hero.name}}</td>
                <td>{{hero.power}}</td>
                <td><input type="checkbox"/></td>
            </tr>
        </table>
        <button @click="addHero()">按一下</button>
    </div>
    <script>
        const vm = new Vue({
            el : "#app",
            data : {
                msg : "",
                heros : [
                    {id:"101",name:"Jerry",power:10000},
                    {id:"102",name:"Tom",power:9000},
                    {id:"103",name:"Jack",power:8000},
                    {id:"104",name:"Rose",power:6000}
                ],
                // 给一个新数组,初始为空
                newH : []
            },
            methods : {
                addHero()
                {
                    this.heros.unshift({id:"1000",name:"Top",power:4000});
                }
            },
            watch : {
                msg : {
                    deep :true,
                    // 打开网页立刻执行一次,不至于空白
                    immediate : true,
                    handler(newValue,oldValue)
                    {
                        this.newH = this.heros.filter((hero) => {
                            return hero.name.indexOf(newValue.toLowerCase()) >= 0 || hero.name.indexOf(newValue.toUpperCase()) >= 0;
                        });
                    }
                }
            }
        });
        // filter不会破坏元素结构,会生成新的数组
        let arr = [1,2,3,4,5,6,7,8,9];
        arr.filter((num) => {
            return num > 5;
        });
    </script>
</body>
</html>
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