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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Title</title>
<meta charset="UTF-8"/>
</head>
<body>
<input id="a1" type="text"/>
<input id="a2" type="button" value="添加"/>
<input id='b' type="button" value="删除"/>
<ui id="u">
<li>1</li>
<li>2</li>
</ui>
<script src="jquery-1.12.4.js"></script>
<script>
//delegate比较重要---委托
$('#a2').click(function () {
var t = $('#a1').val()
var l = '<li>' + t + '</li>'
$('#u').append(l)
})
$('ui').delegate('li', 'click', function () {
var a = $(this).text();
alert(a);
})
$('#b').click(function () {
var index = $('#a1').val()
$('#u li').eq(index).remove()
})
</script>
</body>
</html>
