表单验证之在a标签跳转之前执行其他操作（DOM与$两种实现方式）
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<a href="https://www.baidu.com/" onclick="return fun1()">揍你</a>
<a id="i1" href="https://www.baidu.com/">揍你1</a>
<script src="jquery.js"></script>
<script>
function fun1() {
alert(12213)
return false
}
$('#i1').click(function () {
alert(88888888888)
return false
})
</script>
</body>
</html>
