jquery的基础语法
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Jquery基础语法</title>
<script type="text/javascript" src="jquery-1.7.1.min.js"></script>
</head>
<body>
<div style="height:100px;width: 100px;background: pink; "></div>
<button >登录</button>
<script>
$(document).ready(function(){
$("div").hide();
$("button").click(function(){
$("div").show();
})
})
</script>
</body>
</html>