<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript" src="https://www.imooc.com/static/lib/jquery/1.9.1/jquery.js"></script>
</head>
<body>
<form action="">
<input type="text" value="请输入内容..." id="input">
<ul>
<li class="prev" ><a href="" id="prev">上一页</a></li>
<li><a href="#"></a>1</li>
<li><a href="#"></a>2</li>
<li><a href="#"></a>3</li>
<li class="next" ><a href="#" id="next">下一页</a></li>
</ul>
</form>
<script>
$(document).ready(function () {
console.debug(1);
var prev = document.getElementById("prev");
var next = document.getElementById("next");
var inputText = document.getElementById("input");
//
//
prev.click(function () {
})
});
</script>
</body>
</html>因为这里prev.click(function () { })，删了就可以