用JavaScript实现按钮的事件委托并且区分按钮 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="box">
        <button data-action="remove">移除</button>
        <button data-action="new">新建</button>
        <button data-action="revise">修改</button>
        <button data-action="search">查找</button>
    </div>
    <script>
        var boxEle=document.querySelector('.box')
        boxEle.addEventListener('click',function(e){
            var btnEle=e.target;
            console.log(btnEle.dataset.action);
        })
    </script>
</body>
</html>

 

posted @ 2022-11-09 13:29  theYT  阅读(49)  评论(0)    收藏  举报