<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">javascript
<html>html
<head>java
<meta http-equiv = "content-type" content="text/html;charset=utf-8"/>ide
<script src="js.js" type="text/javascript" language="javascript">ui
</script>spa
</head>orm
<body>htm
<form>ip
姓名:<input type = "text" id = "name" onblur = "checkname();" />utf-8
<span id = "s1">請輸入3-5個字母</span><br />
年齡:<input type = "text" id = "age" onblur = "checkage();"/>
<span id = "s2">請輸入2位數字</span>
<input type = "submit" value = "提交" onclick = "return valid();"/>
</form>
</body>
</html>
//js.js