vue案列

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
    </head>
    <body>
        <div id="div2" v-bind:style="mystyle">
                <section>
                    <h1>{{title}}</h1>
                        <table>
                            <tr>
                                <th>id</th>
                                <th>姓名</th>
                                <th>性别</th>
                            </tr>
                            <tr v-for="person in persons">
                                <td>{{person.id}}</td>
                                <td>{{person.name}}</td>
                                <td>{{person.sex}}</td>
                                <td>
                                <a href="#" @click="remove(person.id)">删除</a>
                                </td>
                            </tr>    
                        </table>
                    </section>
                    <button @click="changeStyle"> 变色</button>
                    <div><input  v-model.number="person.id" ></div>
        <div><input  v-model.number="person.name" ></div>
        <div><input  v-model.number="person.age"></div>
            <button @click="submit">提交</button>
        </div>
        <script src="css/vues.js"></script>
        <script>
            var vm=new Vue({
                el:"#div2",
                data:{
                    title:'渲染数据',
                    persons:[{
                        name:'张三',
                        sex:'男',
                        id:18
                    },
                    {
                        name:'李四',
                        sex:'男',
                        id:22
                    },
                    {
                        name:'李四',
                        sex:'男',
                        id:22
                    },
                    {
                        name:'王五',
                        sex:'女',
                        id:38
                    },
                    ],
                    mystyle:"color:red",
                    person:{id:0,name:"",sex:0}
                },
                methods:{
                    changeStyle:function(){
                        var colors=["green","red","yellow"];
                        var randColor=colors[Math.floor(Math.random()*colors.length)];
                        this.mystyle="color:"+randColor;
                    },
                    submit:function(){
                            this.persons.push({
                            id:this.person.id,
                            name:this.person.name,
                            sex:this.person.sex,
                            });
                            console.log(this.persons);
                    },
                    remove:function(id){
                        this.persons=this.persons.filter((b) => b.id != id);
                    }
                },
                watch:{
                    id:function(n,o){
                        console.log(`修改后n:${n} 修改 o:${o}`)
                    }
                },
                computed:{
                    revMsg:function(){
                        return this.msg.split("").reverse().join("");
                    }
                }
            });
        </script>
    </body>
    
</html>