代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册页面</title>
<style>
*{
margin: 0px;
padding: 0px;
box-sizing: border-box;
}
body{
background: url("背景图片的url") no-repeat center;
padding-top: 25px;
}
.rg_layout{
width: 900px;
height: 500px;
border: 8px solid #EEEEEE;
background-color: white;
margin: auto;
}
.rg_left{
float: left;
margin: 15px;
}
.rg_left > p:first-child{
color:#FFD026;
font-size: 20px;
}
.rg_left > p:last-child{
color:#A6A6A6;
font-size: 20px;
}
.rg_center{
float: left;
}
.rg_right{
float: right;
margin: 15px;
}
.rg_right > p:first-child{
font-size: 15px;
}
.rg_right p a {
color:pink;
}
.td_left{
width: 100px;
text-align: right;
height: 45px;
}
.td_right{
padding-left: 50px ;
}
#username,#password,#email,#name,#tel,#birthday,#checkcode{
width: 251px;
height: 32px;
border: 1px solid #A6A6A6 ;
border-radius: 5px;
padding-left: 10px;
}
#checkcode{
width: 110px;
}
#img_check{
height: 32px;
vertical-align: middle;
}
#btn_sub{
width: 150px;
height: 40px;
background-color: #FFD026;
border: 1px solid #FFD026 ;
}
.error{
color:red;
}
#td_sub{
padding-left: 150px;
}
</style>
<script>
window.onload = function(){
//1.给表单绑定onsubmit事件
document.getElementById("form").onsubmit = function(){
//调用用户校验方法 chekUsername();
//调用密码校验方法 chekPass；();
return checkUsername() && checkPassword();
}
//给用户名和密码框分别绑定离焦事件
document.getElementById("username").onblur = checkUsername;
document.getElementById("password").onblur = checkPassword;
}
//校验用户名
function checkUsername(){
//1.获取用户名的值
var username = document.getElementById("username").value;
//2.定义正则表达式
var reg_username = /^\w{6,12}$/;
//3.判断值是否符合正则的规则
var flag = reg_username.test(username);
//4.提示信息
var s_username = document.getElementById("s_username");
if(flag){
//提示绿色对勾
s_username.innerHTML = "<img width='35' height='25' src='正确显示的图片'/>";
}else{
//提示红色用户名有误
s_username.innerHTML = "用户名格式有误";
}
return flag;
}
//校验密码
function checkPassword(){
//1.获取用户名的值
var password = document.getElementById("password").value;
//2.定义正则表达式
var reg_password = /^\w{6,12}$/;
//3.判断值是否符合正则的规则
var flag = reg_password.test(password);
//4.提示信息
var s_password = document.getElementById("s_password");
if(flag){
//提示绿色对勾
s_password.innerHTML = "<img width='35' height='25' src='正确提示的图片url'/>";
}else{
//提示红色用户名有误
s_password.innerHTML = "密码格式有误";
}
return flag;
}
</script>
</head>
<body>
<div class="rg_layout">
<div class="rg_left">
<p>新用户注册</p>
</div>
<div class="rg_center">
<div class="rg_form">
<!--定义表单 form-->
<form action="#" id="form" method="get">
<table>
<tr>
<td class="td_left"><label for="username">用户名</label></td>
<td class="td_right">
<input type="text" name="username" id="username" placeholder="请输入用户名">
<span id="s_username" class="error"></span>
</td>
</tr>
<tr>
<td class="td_left"><label for="password">密码</label></td>
<td class="td_right">
<input type="password" name="password" id="password" placeholder="请输入密码">
<span id="s_password" class="error"></span>
</td>
</tr>
<tr>
<td colspan="2" id="td_sub"><input type="submit" id="btn_sub" value="注册"></td>
</tr>
</table>
</form>
</div>
</div>
</div>
</body>
</html>