这是这个注册表的代码:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Untitled Document</title>
<script language="javascript">
function checkname(){
var div = document.getElementById("div1");
div.innerHTML = "";
var name1 = document.form1.text1.value;
if (name1 == "") {
div.innerHTML = "姓名不能为空!";
document.form1.text1.focus();
return false;
}
var charname1 = name1.toLowerCase();
for (var i = 0; i < name1.length; i++) {
var charname = charname1.charAt(i);
if (!(charname>=32&&charname<=126)) {
div.innerHTML = "用户名只能为汉字";
document.form1.text1.select();
return false;
}
}
return true;
}
function checkpassword(){
var div = document.getElementById("div2");
div.innerHTML = "";
var password = document.form1.text2.value;
if (password == "") {
div.innerHTML = "密码不位空!";
document.form1.text2.focus();
return false;
}
if (password.length < 4 || password.length > 12) {
div.innerHTML = "密码长度4-12位";
document.form1.text2.select();
return false;
}
return true;
}
function checkrepassword(){
var div = document.getElementById("div3");
div.innerHTML = "";
var password = document.form1.text2.value;
var repass = document.form1.text3.value;
if (repass == "") {
div.innerHTML = "密码不位空!";
document.form1.text3.focus();
return false;
}
if (password != repass) {
div.innerHTML = "输入密码和确认密码不一致";
document.form1.text3.select();
return false;
}
return true;
}
function checkall(){
var div=document.getElementById("div5");
div.innerHTML="";
if (form1.r1[0].checked==false&&form1.r1[1].checked==false){
div.innerHTML="必须选择你是学生或者老师";
return false;
}
return true;
}
function checkEmail(){
var div = document.getElementById("div4");
div.innerHTML = "";
var email = document.form1.text5.value;
var sw = email.indexOf("@", 0);
var sw1 = email.indexOf(".", 0);
var tt = sw1 - sw;
if (email.length == 0) {
div.innerHTML = "电子邮件不能位空";
document.form1.text5.focus();
return false;
}
if (email.indexOf("@", 0) == -1) {
div.innerHTML = "电子邮件格式不正确,必须包含@符号!";
document.form1.text5.select();
return false;
}
if (email.indexOf(".", 0) == -1) {
div.innerHTML = "电子邮件格式不正确,必须包含.符号!";
document.form1.text5.select();
return false;
}
if (tt == 1) {
div.innerHTML = "邮件格式不对。@和.不可以挨着!";
document.form1.text5.select();
return false;
}
if (sw > sw1) {
div.innerHTML = "电子邮件格式不正确,@符号必须在.之前";
document.form1.text5.select();
return false;
}
else {
return true;
}
return ture;
}
function check(){
if (checkname() && checkpassword() && checkrepassword() && checkEmail()&&checkradio()) {