<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Test</title>
<script src="
http://pu-datacastle.oss-cn-qingdao.aliyuncs.com/master.third.source/js/jquery-2.1.4.min.js" type="text/javascript" charset="utf-8"></script>
</head>
<body>
<input type="text" class="test1" /><br /><br />
<button class="test2">替换</button>
<script>
$(function() {
$(".test2").off("click").on("click", function() { //点击替换
$(".test1").replaceWith(function() {
return "<label>666</label>";
});
});
});
</script>
</body>
</html>
望采纳!