lovecoding
/
W250913


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box1{
            width: 300px;
            height: 300px;
            background-color: red;
        }
        .box2{
            width: 200px;
            height: 200px;
            background-color: green;
        }
        .box3{
            width: 100px;
            height: 100px;
            background-color: blue;
        }
    </style>
</head>
<body>
    <div id="app">
        <div>{{str}}</div>
        <!-- v-on: 事件绑定指令 可以将事件绑定到标签上 -->
         <!-- v-on: 可以缩写为 @ -->
        <!-- <button v-on:click="changeStr">按钮</button> -->
        <button @click="changeStr">按钮</button>

        <div class="box1" v-on:click="box1Fun">
            <div class="box2" v-on:click="box2Fun">
                <!-- .stop 阻止事件冒泡 -->
                <div class="box3" v-on:click.stop="box3Fun"></div>
            </div>
        </div>
        <!-- .prevent 阻止默认行为 -->
        <div @contextmenu.prevent="menuFun">hello world</div>
        <!-- a 标签href如果不写地址默认会刷新页面， -->
         <!-- 点击不会刷新页面 修改href为javascript:void(0) 相当于执行一段空的js语法 -->
        <a href="javascript:void(0)" >百度</a>
    </div>
    <script src="./js/vue.js"></script>
    <script>
        new Vue({
            el:"#app",
            data:{
               str:"hello world" 
            },
            // vue2当中用来定义函数及事件处理函数的地方
            methods:{
                changeStr(){
                    // console.log("按钮被点击了");
                    console.log(this.str);
                    this.str = "你好世界";
                },
                box1Fun(){
                    console.log("box1被点击了");
                },
                box2Fun(){
                    console.log("box2被点击了");
                },
                box3Fun(event){
                    // console.log(event)
                    // 阻止事件冒泡
                    // event.stopPropagation();
                    console.log("box3被点击了");
                },
                menuFun(event){
                    
                    console.log("右键点击了");
                    // 阻止默认行为
                    // event.preventDefault();
                }

            }
        })
    </script>
</body>
</html>