位置：首页>> 网络编程>> JavaScript>> 基于javascript的Form表单验证

基于javascript的Form表单验证

作者：pengbo518　　发布时间：2024-04-10 16:20:03　

标签：js,form,表单验证

Form表单验证：
js基础考试内容，form表单验证，正则表达式，blur事件，自动获取数组，以及css布局样式，动态清除等。完整代码如下：

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>form-lpb</title>
<style>
body {
background:#CCF;
font-size:12px;
}
.box {
margin:20px 50px;
line-height:25px;
}
.box .box_sel {
margin-left:25px;
}
.text {
text-align:right;
}
span {
color:#900;
}
.length {
width:38px;
}
</style>
</head>

<body>
<div class="box">

<form action="submit.html" onsubmit="return checkAll()">
<table>
<tr>
<td class="text">账号</td>
<td><input type="text" id="userName" onblur="b_userName()" /></td>
<td><span id="span_userName"></span></td>
</tr>
<tr>
<td class="text"> 密码</td>
<td><input type="password" id="pass" onblur="b_pass()" /></td>
<td> <span id="span_pass"></span></td>
</tr>
<tr>
<td class="text">重复密码</td>
<td><input type="password" id="pass1" onblur="b_pass1()" /></td>
<td> <span id="span_pass1"></span></td>
</tr>
<tr>
<td class="text">手机号</td>
<td><input type="text" id="tel" onblur="b_tel()" /></td>
<td> <span id="span_tel"></span></td>
</tr>
<tr>
<td class="text">身份证号</td>
<td><input type="text" id="idCard" onblur="b_idCard()" /></td>
<td><span id="span_idCard"></span></td>
</tr>
<tr>
<td class="text">出生年月日</td>
<td>
<input type="text" id="year" class="length" disabled="disabled" /> 
<input type="text" id="month" class="length" disabled="disabled" /> 
<input type="text" id="day" class="length" disabled="disabled" />
</td>
</tr>
<tr>
<td class="text"> 邮箱</td>
<td><input type="text" id="email" onblur="b_email()" /></td>
<td><span id="span_email"></span></td>
</tr>
</table>
<div class="box_sel">
爱好
<select>
<option>篮球</option>
<option>足球</option>
<option>排球</option>
</select>
地区
<select>
<option>河南</option>
<option>湖南</option>
<option>河北</option>
</select>
<br />
<input type="checkbox" id="ch_box" onclick="c_box()" />
是否同意
<a href="xieyi.html" target="_blank">公司协议</a>
<br />
<input type="submit" id="sub" value="提交注册" disabled="disabled" />
<input type="reset" id="rst" value="重新填写" onclick="sub_return()" />
</div>
</form>

</div>
<script>
// 用户名校验
function b_userName(){
var reg = /^[a-zA-Z]{3,9}[_]*[0-9]{3,9}$/; // 用户名-正则表达式
var c_use = document.getElementById("userName").value;
var c_span_use = document.getElementById("span_userName");
if(reg.test(c_use)){
c_span_use.innerHTML="√";
return true;
}else {
c_span_use.innerHTML="用户名必须以3-9个字母开头，可以有下划线_，后面3-9个数字";
}
}
// 密码校验
function b_pass(){
var reg = /^[a-zA-Z]{3,6}[_]*[0-9]{3,9}$/; // 密码-正则表达式
var c_pass = document.getElementById("pass").value;
var c_span_pass =document.getElementById("span_pass");
if(reg.test(c_pass)){
c_span_pass.innerHTML="√";
return true;
}

else {
c_span_pass.innerHTML="密码必须以3-6个英文字母开头，后面3-9个数字";
return false;
}
}
// 重复密码校验、
function b_pass1(){
var cm = document.getElementById("pass1").value;
var cm_sp = document.getElementById("span_pass1");
var c_pass = document.getElementById("pass").value;
if(cm==c_pass&&cm!=""){
cm_sp.innerHTML="√";
return true;
}else{
cm_sp.innerHTML="请重复密码";
return false;
}
}
// 手机号校验
function b_tel(){
var reg = /^(\+86)?[1][3,5,8][0-9]{9}$/;
var c_tel = document.getElementById("tel").value;
var c_span_tel = document.getElementById("span_tel");
if(reg.test(c_tel)){
c_span_tel.innerHTML="√";
return true;
}else {
c_span_tel.innerHTML="手机号可以（+86）第一位是1，第二位是【3,5,8】，共11位数字";
return false;
}
}
// 身份证号校验
function b_idCard(){
var reg = /\d{17}\w{1}|\d{15}/;
var c_idCard = document.getElementById("idCard").value;
var c_span_idCard = document.getElementById("span_idCard");
if(reg.test(c_idCard)){
c_span_idCard.innerHTML="√";
document.getElementById("year").value=c_idCard.substr(6,4);// 自动获取年份
document.getElementById("month").value=c_idCard.substr(10,2);// 自动获取月份
document.getElementById("day").value=c_idCard.substr(12,2);
return true;
}else{
c_span_idCard.innerHTML="身份证格式错误，必须是18位数或者是15位数";
document.getElementById("year").value="";// 自动获取年份
document.getElementById("month").value="";// 自动获取月份
document.getElementById("day").value="";
return false;
}
}
// 邮箱校验
function b_email(){
var reg = /\w+@\w+\.\w+/;
var c_email = document.getElementById("email").value;
var c_span_email = document.getElementById("span_email");
if(reg.test(c_email)){
c_span_email.innerHTML="√";
return true;
}else {
c_span_email.innerHTML="邮箱格式错误，必须包含 @ 和 . ";
return false;
}
}
// 协议校验
function c_box(){
var c_b = document.getElementById("ch_box");
var c_sub = document.getElementById("sub");
if(c_b.checked){
c_sub.disabled=false;
}else{
c_sub.disabled=true;
}
}
// sub_return 当点击重新填写时提交按钮恢复为不可用状态
function sub_return(){
var subt = document.getElementById("sub");
subt.disabled=true;
var span_clean = document.getElementsByTagName("span");

for(var i=0;i<=span_clean.length;i++){
var span1 = span_clean[i];
span1.innerHTML= "";
}
}
// 整体校验
function checkAll(){
var c1 =b_userName();
var c2 =b_pass();
var c3 =b_tel();
var c4 =b_idCard();
var c5 =b_email();
if(c1&&c2&&c3&&c4&&c5){
return true;
}else{
return false;
}
}
</script>
</body>
</html>

效果如下图所示：

投稿

基于javascript的Form表单验证

猜你喜欢