vue学习笔记第一天-vue.js简易留言板(删除,全部删除)

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <style>

    style>
    <link rel="stylesheet" href="lib/bootstrap.min.css">
    <script src="lib/jquery-1.7.2.js">script>
    <script src="lib/bootstrap.js">script>

    <script src="vue.js">script>
    <script>
        window.onload=function(){
            new Vue({
                el:'#box',
                data:{
                    myData:[],
                    username:'',
                    age:'',
                    nowIndex:-100   //确定删除的index的初始值
                },
                methods:{
                    add:function(){
                        this.myData.push({
                            name:this.username,      //myData=[name:'',age:'']
                            age:this.age
                        });

                        this.username='';
                        this.age='';
                    },
                    deleteMsg:function(n){
                        if(n==-2){
                            this.myData=[]; //给index一个状态,当是这个状态的时候全部删除,不是这个状态的时候index为0,1,2....
                        }else{
                            this.myData.splice(n,1);  //一个一个删除的时候 ,splice(n,m.'')从n开始删除m个元素,从n开始增加''元素
                        }
                    }
                }
            });
        };
    script>
head>
<body>
    <div class="container" id="box">
        <form role="form">
            <div class="form-group">
                <label for="username">用户名:label>
                <input type="text" id="username" class="form-control" placeholder="输入用户名" v-model="username">
            div>
            <div class="form-group">
                <label for="age">年 龄:label>
                <input type="text" id="age" class="form-control" placeholder="输入年龄" v-model="age">
            div>
            <div class="form-group">
                <input type="button" value="添加" class="btn btn-primary" v-on:click="add()">
                <input type="reset" value="重置" class="btn btn-danger">
            div>
        form>
        <hr>
        <table class="table table-bordered table-hover">
            <caption class="h3 text-info">用户信息表caption>
            <tr class="text-danger">
                <th class="text-center">序号th>
                <th class="text-center">名字th>
                <th class="text-center">年龄th>
                <th class="text-center">操作th>
            tr>
            <tr class="text-center" v-for="(value,item) in myData">
                <td>{{item}}td>
                <td>{{value.name}}td>
                <td>{{value.age}}td>
                <td>
                    <button class="btn btn-primary btn-sm" data-toggle="modal" data-target="#layer" v-on:click="nowIndex=$index">删除button>
                td>
            tr>
            <tr v-show="myData.length!=0">
                <td colspan="4" class="text-right">
                    <button class="btn btn-danger btn-sm" v-on:click="nowIndex=-2" data-toggle="modal" data-target="#layer" >删除全部button>
                td>
            tr>
            <tr v-show="myData.length==0">
                <td colspan="4" class="text-center text-muted">
                    <p>暂无数据....p>
                td>
            tr>
        table>

        
        <div role="dialog" class="modal fade bs-example-modal-sm" id="layer">
            <div class="modal-dialog">
                <div class="modal-content">
                    <div class="modal-header">
                        <button type="button" class="close" data-dismiss="modal">
                            <span>×span>
                        button>
                        <h4 class="modal-title">确认删除么?h4>
                    div>
                    <div class="modal-body text-right">
                        <button data-dismiss="modal" class="btn btn-primary btn-sm">取消button>
                        <button data-dismiss="modal" class="btn btn-danger btn-sm" v-on:click="deleteMsg(nowIndex)">确认button>
                    div>
                div>
            div>
        div>
    div>
body>
html>

 

转载于:https://www.cnblogs.com/lanlanJser/p/7355505.html

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