本篇文章主要给大家介绍用jQuery实现表单提交验证即前台验证的方法。
表单提交验证是我们在项目开发中最为常见的一个实现功能。无论是web学习者还是网站开发上，都是非常重要的一个程序环节。那么表单提交验证包括前台验证还有后台验证，主要都是为了防止恶意留言、SQL注入。本节内容就主要给大家先介绍用jQuery实现前台验证的具体方法。
form表单提交验证的具体代码示例如下：
<!DOCTYPE>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>jQuery用户注册表单验证代码</title>
<link href="css/jq22.css" rel="stylesheet" type="text/css"/>
<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<script language='javascript' src="js/jq22.js"></script>
</head>
<body>
<div class='body_main'>
<div class='index_box' style='margin-top:20px;'>
<div style="position:fixed;color:red;margin:70px 0 0 450px;font-size:16px;Z-index:100;display:block;"
id="hint"></div>
<div class='box_title'>
<div class='text_content'>
<h1>jQuery用户注册表单验证代码</h1>
</div>
</div>
<div class='box_main'>
<div id="register" class="register">
<form id="form" action="check1.php" method="post" onSubmit="return check();">
<div id="form_submit" class="form_submit">
<div class="fieldset">
<div class="field-group">
<label class="required title">手机号码</label>
<span class="control-group" id="mobile_input">
<div class="input_add_long_background">
<input class="register_input" type="text" id="mobile" name="mobile" maxLength="11" value=""
onblur="__changeUserName('mobile');">
</div>
</span>
<label class="tips">仅用于发送服务开通与到期提醒以及紧急故障方便联系到您，绝对保密</label>
</div>
<div class="field-group">
<label class="required title">邮箱</label>
<span class="control-group" id="email_input">
<div class="input_add_long_background">
<input class="register_input" type="text" id="email" name="email" maxLength="50" value=""
onblur="__changeUserName('email');">
</div>
</span>
<label class="tips">请输入您常用的邮箱</label>
</div>
<div class="field-group">
<label class="required title">设置密码</label>
<span class="control-group" id="password1_input">
<div class="input_add_long_background">
<input class="register_input" type="password" id="password1" name="password1" maxLength="20" value=""
onblur="checkPwd1(this.value);"/>
</div>
</span>
<label class="tips">请使用6~20个英文字母（区分大小写）、符号或数字</label>
</div>
<div class="field-group">
<label class="required title">确认密码</label>
<span class="control-group" id="password2_input">
<div class="input_add_long_background">
<input class="register_input" type="password" id="password2" name="password2" maxLength="20" value=""
onblur="checkPwd2(this.value);"/>
</div>
</span>
<label class="tips">请输入确认密码，要和上面的密码一致</label>
</div>
</div>
</div>
<div id="div_submit" class="div_submit">
<div class='div_submit_button'>
<input id="submit" type="submit" value="注册" class='button_button disabled'>
</div>
</div>
</form>
</div>
<script type="text/javascript">
function __changeUserName(of) {
var username = $('#' + of).val();
if (of == 'email') {
if (username.search(/^[\w\.+-]+@[\w\.+-]+$/) == -1) {
showTooltips('email_input', '请输入正确的Email地址');
return;
}
}
else {
if (username == '' || !isMobilePhone(username)) {
showTooltips('mobile_input', '请输入正确的手机号码');
return;
}
}
}
function checkPwd1(pwd1) {
if (pwd1.search(/^.{6,20}$/) == -1) {
showTooltips('password1_input', '密码为空或位数太少');
} else {
hideTooltips('password1_input');
}
}
function checkPwd2(pwd2) {
var pas1 = $('#password1').val();
if (pwd2.search(/^.{6,20}$/) == -1) {
showTooltips('password2_input', '密码为空或位数太少');
}
if (pwd2 != pas1) {
showTooltips('password2_input', '两次密码不一致');
}
}
function check() {
hideAllTooltips();
var ckh_result = true;
// if ($('#email').val() == '' || !isEmail($('#email').val())) {
// showTooltips('email_input', '请输入正确的Email地址');
// ckh_result = false;
// }
if ($('#password1').val() == '') {
showTooltips('password1_input', '密码不能为空');
ckh_result = false;
}
if ($('#password2').val() == '') {
showTooltips('password2_input', '确认密码不能为空');
ckh_result = false;
}
if ($('#password2').val() != $('#password1').val()) {
showTooltips('password2_input', '两次密码不一致');
ckh_result = false;
}
if ($('#mobile').val() == '' || !isMobilePhone($('#mobile').val())) {
showTooltips('mobile_input', '手机号码不正确');
ckh_result = false;
}
return ckh_result;
}
function isMobilePhone(value) {
if (value.search(/^(\+\d{2,3})?\d{11}$/) == -1) {
return false;
}
else
return true;
}
function isEmail(value) {
if (value.search(/^[\w\.+-]+@[\w\.+-]+$/) == -1) {
return false;
}
else
return true;
}
</script>
</div>
<div class='box_bottom'></div>
</div>
</div>
</body>
</html>其中jq22.css代码示例：
body{margin:0;padding:0;background:url("../images/body_bg.png") repeat 0 0 #F2F2F2;width:100%;height:166px;color:#333333;font:12px/18px "tahoma","Microsoft YaHei","arial","SimHei","SimSun";}
html,body,ul,li,div,a{margin:0;padding:0;}
a.menu:hover{color: #ffff00;text-decoration: none;}
a.menu:active{color: #ffffff;text-decoration: none}
a.menu:link{color: #ffffff;text-decoration: none}
a.menu:visited{color: #ffffff;text-decoration: none}
img{border:0;}
label{margin: 0 5px 0 0}
a{color:#1F376D;text-decoration: none}
a:hover{color:#01B2FF;}
a.blue{color:#26A3CF;text-decoration: none}
a.more{color:#FFFFFF;text-decoration: none}
.footer *{color:#9B9B9B;text-shadow:0 1px 0 #fff;}
.footer a:hover{color:#555;}
input[type="submit"]{background:url('../images/buttom.png') no-repeat;font-size:15px;font-weight:600;color:#FFFFFF;border:0;font-family:"Microsoft YaHei","SimHei","SimSun";text-shadow:0 -1px 0 #535353;margin:5px 5px 0 0;padding:0 0 3px 0;display:block;width:106px;height:35px;text-align:center;font-weight:bold;line-height:33px;text-indent:20px;}
input[type="button"]{background:url('../images/buttom.png') no-repeat;font-size:15px;font-weight:600;color:#FFFFFF;border:0;text-shadow:0 -1px 0 #535353;margin:5px 5px 0 0;padding:0 0 3px 0;display:block;width:106px;height:35px;text-align:center;font-weight:bold;line-height:33px;text-indent:20px;}
input.button_button{background:url('../images/buttom.png') no-repeat;margin:0;width:106px;height:35px;border:0;font-size:15px;font-weight:600;color:#FFFFFF;text-shadow:0 -1px 0 #535353;padding:0 0 3px 0;text-align:center;font-weight:bold;line-height:33px;text-indent:20px;}
ol,ul{list-style:none outside none;margin:0px;padding:0;}
hr{color:#FF7700;width:200px;height:2px;float:left;}
textarea{font-size:12px;background-color:#ffffff;border:solid 1px #888888;}
fieldset{clear:both;padding:0 0 1em 1em;margin:0 0 30px .3em;border:1px solid #888888;}
legend{margin:0 0;padding:2px;font-size:10px;border:0px ;text-transform:capitalize;color:#000000;}
.clear{clear:both !important}
.bold{font-weight:bold !important}
.block{display:block !important}
/*index start*/
.body_main{margin:0 auto;width:992px;}
.index_box .box_title{background:url('../images/box_top.png') no-repeat scroll center top transparent;width:991px;height:80px;padding:0;}
.index_box .box_title .text_content{text-align:center;padding:20px 0 10px 0;}
.index_box .box_title .text_content h1{font-weight:normal;}
.index_box .box_main{border:solid #D0D0D0;background:#ffffff;border-width:0 1px 0 1px;width:988px;;min-height:50px;overflow:hidden !important;}
.index_box .box_bottom{background:url('../images/box_bottom.png') no-repeat scroll center top transparent;width:991px;height:7px;padding:0;}
/*Tooltips*/
.tooltips_main{position:absolute;left:0;margin:-5px 0 0 2px;z-index:999;}
.tooltips_box,.tooltips,.msg{display:inline-block;*display:inline;*zoom:1;position:relative;border-style:solid;border-color:#FF1F1F;}
.tooltips,.msg{border-width:0 1px;*left:-2px;background-color:#FFCFCF;}
.tooltips_box{border-width:1px;line-height:1.5;}
.tooltips{margin:0 -2px;}
.msg{margin:1px -2px;padding:0 6px;color:#2F2C2C;text-shadow:0 1px 0 #FFFFFF;font-size:12px;}
.ov{background:url('../images/tri.gif') no-repeat scroll 0 0 transparent;position:absolute;left:30%;overflow:hidden;width:15px;height:15px;margin:16px 0 0 0;display:inline;}
/*regist*/
.register{float:left;padding:25px 50px;}
.register .form_submit{float:left;border-bottom:1px solid #bfbfbf;width:888px;}
.register .form_submit .fieldset{float:left;}
.register .form_submit .fieldset .field-group{float:left;height:55px;}
.register .form_submit .fieldset .field-group .title{float:left;width:120px;text-align:right;margin:4px 0 0 0;font-size:14px;}
.register .form_submit .fieldset .field-group .control-group{float:left;width:350px;margin:0 10px;}
.register .form_submit .fieldset .field-group .tips{float:left;width:250px;color:#bfbfbf;}
.register .div_submit{float:left;width:875px;margin:10px 5px;}
.register .div_submit .div_submit_button{float:right;}
/*end regist*/
.fieldset .input_add_background{background:url("../images/input.jpg") no-repeat scroll 100% 100% transparent;background-position: center;height:30px;width:157px;float:left;margin:0 2px 0 0;}
.fieldset .input_add_background input.register_input_ot{background-color:#f9f9f9;border:0 none;color:#4F4F4F;font-size:12px;height:18px;outline:medium none;width: 145px;padding:1px;margin:5px;}
.fieldset .input_add_long_background{background:url("../images/input_long.jpg") no-repeat scroll 100% 100% transparent;background-position: center;height:30px;width:286px;float:left;margin:0 0 15px 0;display:inline;}
.fieldset .input_add_long_light_background{background:url("../images/input_long_light.jpg") no-repeat scroll 100% 100% transparent;background-position: center;height:30px;width:286px;float:left;}
.fieldset .input_add_long_background input.register_input{background-color:#f9f9f9;border:0 none;color:#4F4F4F;font-size:12px;height:18px;outline:medium none;width: 270px;padding:1px;margin:5px;}
.fieldset .input_text{display:inline-block;position:absolute;vertical-align:top;margin:6px 0 0 10px;z-index:2;font-style:italic;color:#BFBFBF;}jq22.js代码示例如：
function trim(str){
return str.replace(/(^\s*)|(\s*$)/g, "");
}
/**** 是否为合法外网IP地址 ****/
function isIP(value) {
var reg_ip = new RegExp('^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$');
if ( ! reg_ip.exec(value) ) {
return false;
}
var strs = value.split(".");
if( strs.length != 4) {
return false;
}
for (var i=0;i<strs.length ;i++ ) {
if (strs[i].indexOf("0") == 0 && strs[i].length > 1) {
return false;
}
else if (parseInt(strs[i])>255 || parseInt(strs[i])<0) {
return false;
}
}
if (value.search(/^192\.168\./) != -1 || value.search(/^172/) != -1 || value.search(/^127\.0/) != -1 ) {
return false;
}
return true;
}
/**** 是否为合法IP地址 ****/
function isAllIP(value, innerIP) {
var reg_ip = new RegExp('^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$');
if ( ! reg_ip.exec(value) ) {
return false;
}
var strs = value.split(".");
if( strs.length != 4) {
return false;
}
for (var i=0;i<strs.length ;i++ ) {
if (strs[i].indexOf("0") == 0 && strs[i].length > 1) {
return false;
}
else if (parseInt(strs[i])>255 || parseInt(strs[i])<0) {
return false;
}
}
if (innerIP == false) {
if (value.search(/^192\.168\./) != -1 || value.search(/^172/) != -1 || value.search(/^127\.0/) != -1 ) {
return false;
}
}
return true;
}
/**** 是否为合法Email地址 ****/
function isEmail(value) {
if(value.search(/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/) == -1)
return false;
else
return true;
}
/**** 是否为合法的国内电话号码 ****/
function isTelphone(value) {
if(value.search(/^(\d{3}-\d{8}|\d{4}-\d{7}|\d{4}-\d{8})$/) == -1)
return false;
else
return true;
}
/**** 是否为合法的手机号码，为了兼容国际写法，目前只判断了是否是+数字 ****/
function isMobilePhone(value) {
if(value.search(/^(\+\d{2,3})?\d{11}$/) == -1)
return false;
else
return true;
}
/**** 是否为合法的国内邮政编码 ****/
function isZipcode(value) {
if(value.search(/^[1-9]\d{5}$/) == -1)
return false;
else
return true;
}
/**** 是否为合法的QQ号 ****/
function isQQ(value) {
if(value.search(/^[1-9][0-9]{4,}$/) == -1)
return false;
else
return true;
}
/**** 是否为数字串，length等于0不限制长度 ****/
function isNumber(value, length) {
var regx;
if(length==0)
regx = new RegExp("^\\d*$");
else
regx = new RegExp("^\\d{" + length + "}$");
if(value.search(regx) == -1)
return false;
else
return true;
}
/*Error message Tooltips*/
$(document).ready(function(){
/*点击隐藏错误提示,如果不想让提示点击消失,需要加上class='not_click_hide'*/
$('.control-group input').not('.not_click_hide').focus(function(){
hideTooltips($(this).parent().parent().attr('id'));
});
});
/*
*msgid:想让tooltips出现的地方的id
*msg:提示的内容
*time:自动消失的时间，如果不想让提示自动消失，则此参数不写
*/
function showTooltips(msgid,msg,time){
if (msgid==''){ return; }
if (msg==''){ msg='Error!'; }
$('#'+msgid).prepend("<div class='for_fix_ie6_bug' style='position:relative;'><div class='tooltips_main'><div class='tooltips_box'><div class='tooltips'><div class='msg'>"+msg+"</div></div><div class='ov'></div></div></div></div>");
$('#'+msgid+' .tooltips_main').fadeIn("slow").animate({ marginTop: "-23px"}, {queue:true, duration:400});
try{
if(typeof time != "undefined"){
setTimeout('hideTooltips("'+msgid+'")',time);
}
}catch(err){}
}
function hideTooltips(msgid){
try{
$('#'+msgid).find('.tooltips_main').fadeOut("slow");
$('#'+msgid).find('.tooltips_main').remove();
}catch(e){}
}
function hideAllTooltips(){
$('.tooltips_main').fadeOut("slow");
$('.tooltips_main').remove();
}
/*End error message tooltips*/check1.php代码示例：
<?php var_dump($_POST);
前台表单效果如图：
当我们输入不正确的手机号码后，就会出现如下提示：
当我们都输入正确的信息，点击提交后，就会返回完整的信息如下：
那么由于文章篇幅的原因，本节内容就先介绍到这里。大家可以先复制这些代码在本地测试，在下一篇文章中，我们再继续为大家详细介绍代码部分，希望对需要的朋友有所帮助！
想要了解更多前端相关知识，可以关注PHP中文网jQuery视频教程 、JavaScript视频教程、Bootstrap教程等等相关视频教程，欢迎大家参考学习！
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