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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="x5-orientation"content="portrait">
<title></title>
<style>
</style>
</head>
<body>
<div>1234</div>
<input type="button" value="点击"/>
<script src="./jquery-1.11.3.min.js"></script>
<script>
$(function(){
$("input").click(function(){
$("div").addClass("newClass");
$(".newClass").unbind('click').on('click',function(){
alert("hello?");
});
});
});
</script>
</body>
</html>