<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#btn {
display: none;
}
</style>
<script type="text/javascript">
window.onload = function () {
// 获取元素
var inp = document.getElementById('inp');
var btn = document.getElementById('btn');
inp.onchange = function () {
var checked = this.checked;
// 根据checked 值来显示隐藏按钮
}
}
</script>
</head>
<body>
<div>
<p>我是内容条款！</p>
<p>我是内容条款！</p>
<p>我是内容条款！</p>
<p>我是内容条款！</p>
<p>我是内容条款！</p>
<p>我是内容条款！</p>
</div>
<label><input id="inp" type="checkbox"/> 同意条款</label>
<p><button id="btn">下一步</button></p>
</body>
</html>
