事件修饰符 

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <script src="../js/vue.js" type="text/javascript" charset="utf-8"></script>
        <style type="text/css">
            .demo1{
                background-color: #00FFFF;
            }
            .box1{
                background-color: #5F9EA0;
            }
            .box2{
                background-color: #FF7F50;
            }
            ul{
                width: 100px;
                height: 200px;
                background-color: #FF4500;
                overflow: auto;
            }
            li{
                height: 100px;
                width: 100px;
                background-color: #008000;
            }
        </style>
    </head>
    <body>
        <div id="app">
            <!-- 点击事件修饰符，阻止事件默认事件-->
            <a href="www.baidu.com" @click.prevent="showInfo">点我</a>
            <!-- 阻止事件冒泡-->
            <div class="demo1" @click="showInfo2">
                <button @click.stop="showInfo">点击按钮</button>
            </div>
            <!-- 事件只出发一次-->
            <button @click.once="showInfo">只单机一次</button>
            <!-- 事件捕获模式-->
            <div class="box1" @click.capture="showInfo3(1)">
                div1
                <div class="box2" @click="showInfo3(2)">
                    div2
                </div>
            </div>
            <!-- 事件的默认行为会立即执行。无需等待事件回调完毕执行
            @scroll滚动条滑动事件()
            @wheel滚动条滑动事件
            -->
            
            <ul @wheel.passive="conlog">
                <li>1</li>
                <li>2</li>
                <li>3</li>
                <li>4</li>
            </ul>
        </div>
        <script type="text/javascript">
            new Vue({
                el:'#app',
                methods:{
                    showInfo(e){
                        alert("helloword")
                    },
                    showInfo2(){
                        alert("你好")
                    },
                    showInfo3(msg){
                        alert(msg)
                    },
                    conlog(){
                        for(var i=0;i<1000;i++){
                            console.log('@')
                        }
                        
                    }
                }
            })
        </script>
    </body>
</html>

 

posted @ 2021-08-17 19:39  幻影之舞  阅读(62)  评论(0)    收藏  举报