JS事件委托中同一个标签执行不同操作，根据标签的选择器选择
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="box">
<input type="button" class="add" value="添加" />
<input type="button" class="remove" value="删除" />
<input type="button" class="move" value="移动" />
<input type="button" class="select" value="选择" />
</div>
</body>
<script>
window.onload = function(){
var oBox = document.getElementById("box");
oBox.onclick = function (ev) {
var ev = ev || window.event;
var target = ev.target || ev.srcElement;
if(target.nodeName.toLocaleLowerCase() == 'input'){
switch(target.className){
case 'add' :
alert('添加');
break;
case 'remove' :
alert('删除');
break;
case 'move' :
alert('移动');
break;
case 'select' :
alert('选择');
break;
}
}
}
}
</script>
</html>