用html javascript做一个用户注册窗口,要求实现登录名不为空,且两次密码输入一致的功能??

我们现在正在学网页制作的javascript部分,以上功能需用javascript代码来完成,非常急!!

function Check()
{
if(document.getElementById("帐号id").value=="")
{
alert("登录名不能为空!")
return false;
}
if(document.getElementById("第一次密码id").value!=document.getElementById("第二次密码id").value)
{
alert("两次输入密码不一样!");
return false;
}
}

在你的注册按钮调用上面方法就行了
温馨提示:答案为网友推荐,仅供参考
第1个回答  2019-03-29
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<button onclick="dengRu()">登入</button>
<button onclick="zhuCe()">注册</button>
</body>
</html>
<script type="text/javascript">
var a1;var b1;
var a2;var b2;
var a3;var b3;

var ciShu = 1;
function zhuCe(){
alert("欢迎进入注册界面");
if(ciShu == 1){
a1 = prompt("请注册您的账号");
if(a1==""||a1==null){
alert("账号不能为空")
}else{
b1 = prompt("请注册您的密码");
if(b1==""||b1==null){
alert("密码不能为空")
}else if(ciShu== 2){
a2 = prompt("请注册您的账号");
if(a2==""||a2==null){
alert("账号不能为空");
}else{
b2 = prompt("请注册您的密码");
if(b2==""||b2==null){
alert("密码不能为空")
}else if(ciShu== 3){
a3 = prompt("请注册您的账号");
if(a3==""||a3==null){
alert("账号不能为空")
}else{
b3 = prompt("请注册您的密码");
if(b3==""||b3==null){
alert("密码不能为空")
}else{
}
console.log("第"+ciShu+"次注册");
console.log("账号1为"+a1+",密码1为"+b1);
console.log("账号2为"+a2+",密码2为"+b2);
console.log("账号3为"+a3+",密码3为"+b3);
ciShu++;
}
}
}
}
}
}
}

function dengRu(){
alert("欢迎进入登入界面");
var zhangHao = prompt("请输入您的账号");
var miMa = prompt("请输入您的密码");
if(zhangHao==a1&&miMa==b1||zhangHao==a2&&miMa==b2||zhangHao==a3&&miMa==b3){
alert("登录成功")
}else{
alert("登录失败")
}
}
</script>
第2个回答  2011-09-19
以下是你要的功能所有代码,请给分,谢谢!

<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title> Please Login </title>
</head>

<body>

<div id="panel">
<form action="register_submit" method="get" accept-charset="utf-8" onsubmit="check(this);return false;">
<div class="name">
<span>用户名</span>
<input type="text" name="name" value="" />
</div>
<div class="passowrd">
<span>密码</span>
<input type="password" name="passowrd" value="" />
</div>
<div class="confirm_passowrd">
<span>确认密码</span>
<input type="password" name="confirm_passowrd" value="" />
</div>
<div><input type="submit" value="Continue →"></div>
</form>
</div>

<script type="text/javascript">
//<![CDATA[
function check(form) {
if (form.name.value == '') {
alert('用户名不能为空');
return;
}
if (form.passowrd.value == '') {
alert('密码不能为空');
return;
}
if (form.passowrd.value != form.confirm_passowrd.value) {
alert('两次输入密码不一致');
return;
}
form.submit();
}
//]]>
</script>

</body>
</html>
第3个回答  2011-09-28
<%@ page contentType="text/html; charset=gb2312" language="java"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>用户注册</title>
<script language="javascript">
function IsDigit(cCheck)
{
return (('0'<=cCheck) && (cCheck<='9'));
}

function IsAlpha(cCheck)
{
return ((('a'<=cCheck) && (cCheck<='z')) || (('A'<=cCheck) && (cCheck<='Z')))
}

function IsValid()
{
var struserName = reg.UserName.value;
for (nIndex=0; nIndex<struserName.length; nIndex++)
{
cCheck = struserName.charAt(nIndex);
if (!(IsDigit(cCheck) || IsAlpha(cCheck)))
{
return false;
}
}
return true;
}
function chkEmail(str)
{
return str.search(/[\w\-]{1,}@[\w\-]{1,}\.[\w\-]{1,}/)==0?true:false
}

function docheck()
{
if(reg.UserName.value=="")
{
alert("请填写用户名");
return false;
}
else if(!IsValid())
{
alert("用户名只能使用字母和数字");
return false;
}
else if(reg.UserPassword.value=="")
{
alert("请填写密码");
return false;
}
else if(reg.UserPassword.value != reg.CUserPassword.value)
{
alert("两次密码不一致");
return false;
}
else if(reg.NickName.value =="")
{
alert("请填写昵称");
return false;
}
else if(reg.Email.value =="")
{
alert("请填写邮箱");
return false;
}
else if(!chkEmail(reg.Email.value))
{
alert("请填写有效的Email地址");
return false;
}
else
{
return true;
}
}
</script>
<STYLE type=text/css>
td, th {
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
line-height: 24px;
color: #333333;
}
</STYLE>
</head>
<body>
<h1 align="center">用户注册</h1>
<div align="center">
<form name="reg" action="user_add.jsp" method="post" target="_self" onSubmit="return docheck()">
<table width="90%" border="0">
<tr>
<td width="50%" align="right" height="25"><font face="Arial, Helvetica, sans-serif">请输入要注册的用户名:</font></td>
<td width="50%" align="left" height="25">
<input type="text" name="UserName">
<br>
<font color="red"> 用户名只能由字母和数字组成</font>
</td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入密码:</td>
<td width="50%" align="left" height="25"> <input type="password" name="UserPassword"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入确认密码:</td>
<td width="50%" align="left" height="25"> <input type="password" name="CUserPassword"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入昵称:</td>
<td width="50%" align="left" height="25"> <input type="text" name="NickName"></td>
</tr>
<tr>
<td width="50%" align="right" height="25">请选择性别:</td>
<td width="50%" align="left" height="25"> <input type="radio" name="Sex" value="0" checked>男 <input type="radio" name="Sex" value="1">女</td>
</tr>
<tr>
<td width="50%" align="right" height="25">请输入Email地址:</td>
<td width="50%" align="left" height="25"> <input type="text" name="Email"></td>
</tr>
</table>
<p>
<input type="submit" name="sub" value="注册">
<input type="reset" name="res" value="重填">
</p>
</form>
</div>
</body>
</html>
第4个回答  2011-09-19
发给你了 ,计算器也发给你了