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阻止事件冒泡

作者:互联网

0. 使用.stop和.prevent

1. 示例1:

阻止事件冒泡

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .c1{
            background-color: tan;
            height: 200px;
        }
        .c2{
            background-color: red;
            height: 100px;
            width: 100px;
        }

    </style>
    <script src="vue.js"></script>
</head>
<body>

    <div id="app">

        <div class="c1" @click="f1">
            <!-- 阻止事件冒泡 -->
<!--            <div class="c2" @click.stop="f2"></div>-->
            <div class="c2" @click.stop.prevent="f2"></div>
        </div>

        <!-- 阻止标签默认动作 -->
<!--        <a href="http://www.baidu.com" @click.stop.prevent="">百度</a>-->

    </div>



</body>
<script>

        var card = new Vue({
            el:"#app",
            data:{
                username:'chao'

            },
            methods:{
                f1(){
                    alert('负极标签');
                },
                f2(){

                    alert('子标签')

                }

            },



        });


    </script>
</html>

2. 综合案例-todolist

我的计划列表

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>todolist</title>
	<style type="text/css">
		.list_con{
			width:600px;
			margin:50px auto 0;
		}
		.inputtxt{
			width:550px;
			height:30px;
			border:1px solid #ccc;
			padding:0px;
			text-indent:10px;
		}
		.inputbtn{
			width:40px;
			height:32px;
			padding:0px;
			border:1px solid #ccc;
		}
		.list{
			margin:0;
			padding:0;
			list-style:none;
			margin-top:20px;
		}
		.list li{
			height:40px;
			line-height:40px;
			border-bottom:1px solid #ccc;
		}

		.list li span{
			float:left;
		}

		.list li a{
			float:right;
			text-decoration:none;
			margin:0 10px;
		}
	</style>
    <script src="js/vue.js"></script>
</head>
<body>
	<div id="todolist" class="list_con">
		<h2>To do list</h2>
		<input type="text" v-model="message" class="inputtxt">
		<input type="button" @click="addItem" value="增加" class="inputbtn">
		<ul id="list" class="list">
			<li v-for="item,key in dolist">
				<span>{{item}}</span>
				<a @click="upItem(key)" class="up" > ↑ </a>
				<a @click="downItem(key)" class="down"> ↓ </a>
				<a @click="delItem(key)" class="del">删除</a>
			</li>
		</ul>
	</div>
    <script>
    // 计划列表代码
    let vm = new Vue({
        el:"#todolist",
        data:{
            message:"",
            dolist:[
                "学习html",
                "学习css",
                "学习javascript",
            ]
        },
        methods:{
            addItem(){
                if(this.messsage==""){
                    return false;
                }

                this.dolist.push(this.message);
                this.message = ""
            },
            delItem(key){
                this.dolist.splice(key, 1);
            },
            upItem(key){
                if(key==0){
                    return false;
                }
                // 向上移动
                let result = this.dolist.splice(key,1); // 注意返回的是数组
                this.dolist.splice(key-1,0,result[0]);
            },
            downItem(key){
                // 向下移动
                let result = this.dolist.splice(key, 1);
                console.log(result); 
                this.dolist.splice(key+1,0,result[0]);
            }
        }
    })
    </script>
</body>
</html>

标签:result,splice,dolist,list,height,阻止,冒泡,key,事件
来源: https://blog.csdn.net/qq_52385631/article/details/123286324