<head>
<title>register</title></head>
<body bgcolor="#ffffff"><form name="thisForm" action="#" method="GET" onsubmit="return formCheck()">
<script language="JavaScript" type="text/JavaScript">
function formCheck(){
if(thisForm.password.value!=thisForm.pass.value){
alert("两次输入的密码不一致,请再次输入!");
return false;
}
return true;
}</script>
<p align="center">
<table> <tr>
<td align="right">密码:</td>
<td>
<input type="password" name="password"/>
</td>
</tr>
<tr>
<td align="right">请再次输入密码:</td>
<td>
<input type="password" name="pass"/>
</td>
</tr>
<tr>
<td><input type="submit" name="sub" value="提交"></td>
<td><input type="reset" name="res" value="重写">
</tr>
</table>
</form>
</body>
</html>
<title>register</title></head>
<body bgcolor="#ffffff"><form name="thisForm" action="#" method="GET" onsubmit="return formCheck()">
<script language="JavaScript" type="text/JavaScript">
function formCheck(){
if(thisForm.password.value!=thisForm.pass.value){
alert("两次输入的密码不一致,请再次输入!");
return false;
}
return true;
}</script>
<p align="center">
<table> <tr>
<td align="right">密码:</td>
<td>
<input type="password" name="password"/>
</td>
</tr>
<tr>
<td align="right">请再次输入密码:</td>
<td>
<input type="password" name="pass"/>
</td>
</tr>
<tr>
<td><input type="submit" name="sub" value="提交"></td>
<td><input type="reset" name="res" value="重写">
</tr>
</table>
</form>
</body>
</html>
我不会用正则表达 式,怎样才能在使输入的学号是“0501”这种格式呢?而不是200501这种的呢?