Php HTML表单验证
我创建了一个简单的HTML表单,将输入作为客户的用户名。它验证它是否确实是有效的用户名。如果是,则应转到Php HTML表单验证,php,javascript,html,forms,Php,Javascript,Html,Forms,我创建了一个简单的HTML表单,将输入作为客户的用户名。它验证它是否确实是有效的用户名。如果是,则应转到step2.php页面;如果不是,则应显示错误并停留在原始页面上 以下是我的HTML代码: <form method="post" onsubmit="validateUsername();" id="myform" name="myform" action="step2.php"> Choose username: <input type="text" id="
step2.php
页面;如果不是,则应显示错误并停留在原始页面上
以下是我的HTML代码:
<form method="post" onsubmit="validateUsername();" id="myform" name="myform" action="step2.php">
Choose username: <input type="text" id="username" name="username" />
<input type="submit" value="Submit">
</form>
选择用户名:
我正在使用javascript函数验证用户名:
function validateUsername()
{
var x=document.forms["myform"]["username"].value.length;
if (x < 5)
{
alert('Username too short.');
return false;
}
else
{
return true;
}
}
onsubmit="return validateUsername();"
函数validateUsername()
{
var x=document.forms[“myform”][“username”].value.length;
if(x<5)
{
警报('用户名太短');
返回false;
}
其他的
{
返回true;
}
}
我的问题:
如果用户输入短用户名,则会显示一条警告消息“用户名太短”。当我按下警报消息上的“OK”按钮时,它将进入step2.php。理想情况下,只有正确验证用户名后,它才应该将数据发送到step2.php。但这并没有发生
有人能在我的代码中找到错误吗?更改:
<form method="post" onsubmit="validateUsername();" id="myform" name="myform" action="step2.php">
Choose username: <input type="text" id="username" name="username" />
<input type="submit" value="Submit">
</form>
选择用户名:
致:
选择用户名:
注意添加了关键字return
,如果validateUsername
返回false,则应取消表单提交。尝试此操作。(将返回添加到表单中的onsubmit)
选择用户名:
另一个注意事项是,请确保在第2步中也通过php进行验证,因为可以轻松绕过客户端验证。在调用函数之前添加
返回
:
function validateUsername()
{
var x=document.forms["myform"]["username"].value.length;
if (x < 5)
{
alert('Username too short.');
return false;
}
else
{
return true;
}
}
onsubmit="return validateUsername();"
..或使用事件.preventDefault()
:
首先是html表单,不要在表单的onsubmit事件中使用return-before javascript函数
<form method="post" onsubmit="validateUsername();" id="myform" name="myform" action="step2.php">
Choose username: <input type="text" id="username" name="username" />
<input type="submit" value="Submit">
{
var x=document.myform.username.value.length
if (x < 5)
{
alert('Username too short.');
return false;
}
if(x<5)
{
警报('用户名太短');
返回false;
}
}功能验证(){
var eid=$.trim($('#email').val());
var password=$.trim($('#password').val());
变量emailval=/^([a-zA-Z0-9\.\-])+\@([a-zA-Z0-9\-])+)+([a-zA-Z])+/;
变量con=/^\(?([0-9]{3})\)?[-.]([0-9]{3})[-.]?([0-9]{4})$/;
var errmsg='';
var c=0;
变量cur_el=“”;
如果(eid=''| | eid==null)
{
errmsg=“输入您的电子邮件”;
cur_el=$('电子邮件');
c=1;
}
如果(!emailval.test(eid))则为else{
errmsg=“请提供有效的电子邮件地址(提示:daskoushik9@gmail.com)";
cur_el=$('电子邮件');
c=1;
}
else if(密码=“”)
{
errmsg=“输入密码”;
cur_el=$(“#密码”);
c=1;
}
else if(password.lengthI我不记得了(不要经常使用JavaScript),但我认为您必须在提交按钮的onclick
触发器中进行检查,以防止表单提交。@animuson:他们仍然可以通过按enter或类似的方式提交表单。您好,我也在服务器端进行验证。谢谢:)好的,很好。如果修复程序对您有效,请将Ivan的答案标记为正确答案,因为他之前回答了。谢谢您也可以在添加解释的onclick事件上调用javascipt函数
function validateUsername()
if (x < 5)
{
alert('Username too short.');
return false;
}
function validation(){
var eid=$.trim($('#email').val());
var password=$.trim($('#password').val());
var emailval =/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+/;
var con=/^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/;
var errmsg='';
var c=0;
var cur_el='';
if(eid=='' || eid==null)
{
errmsg="enter your email";
cur_el=$('#email');
c=1;
}
else if (!emailval.test(eid)) {
errmsg="Please provide a valid email address (hints : daskoushik9@gmail.com)";
cur_el=$('#email');
c=1;
}
else if(password=='')
{
errmsg="enter password";
cur_el=$('#password');
c=1;
}
else if(password.length<4)
{
errmsg="password is too short";
cur_el=$('#password');
c=1;
}
if(c==1 && errmsg!=''){
alert(errmsg);
cur_el.focus();
return false;
}
else
{return true;}
}
function adminprofilevalidation(){
var ad_uname=$.trim($('#admin_username').val());
var ad_oldpass=$.trim($('#admin_passo').val());
var ad_newpass=$.trim($('#admin_pass').val());
var ad_repass=$.trim($('#admin_passc').val());
var ad_email=$.trim($('#admin_email').val());
// var eid=$.trim($('#email').val());
// var password=$.trim($('#password').val());
// var cpassword=$.trim($('#cpassword').val());
// var file=$('#file').val();
var errmsg='';
var c=0;
var cur_el='';
//var em=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
var alphaExp = /^[a-zA-Z]+$/;
// var alphaNum = /^[0-9a-zA-Z]+$/;
// var digit = /^[0-9]+$/;
// var fdigit=/^[0]+$/;
var emailval = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+/;
var con=/^\(?([0-9]{2})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/;
if(ad_uname=='' || ad_uname==null)
{
errmsg="Enter User name";
cur_el=$('#admin_username');
c=1;
}
else if(!ad_uname.match(alphaExp)){
errmsg="Please enter only letters for your name";
cur_el=$('#firstname');
c=1;
}
else if(ad_oldpass=='' || ad_oldpass==null)
{
errmsg="enter Old password";
cur_el=$('#admin_passo');
c=1;
} else if(ad_oldpass.length<4)
{
errmsg="password is too short";
cur_el=$('#admin_passo');
c=1;
}
else if(ad_newpass=='' || ad_newpass==null)
{
errmsg="please enter new password";
cur_el=$('#admin_pass');
c=1;
}
else if(ad_newpass.length<4)
{
errmsg="password is too short";
cur_el=$('#admin_pass');
c=1;
}
else if(ad_repass=='' || ad_repass==null)
{
errmsg="please re enter the password";
cur_el=$('#admin_passc');
c=1;
}
else if(ad_repass.length<4)
{
errmsg="password is too short";
cur_el=$('#admin_passc');
c=1;
}
else if(ad_email=='' || ad_email==null)
{
errmsg="Enter your email";
cur_el=$('#admin_email');
c=1;
}
else if (!emailval.test(ad_email)) {
errmsg='Please provide a valid email address (hints : daskoushik9@gmail.com)';
cur_el=$('#admin_email');
c=1;
}
if(c==1 && errmsg!=''){
alert(errmsg);
cur_el.focus();
return false;
}
else
{return true;}
}
function companyprofilevalidation(){
var co_name=$.trim($('#company_name').val());
var co_pcntact=$.trim($('#company_contact_person').val());
var co_add=$.trim($('#company_address').val());
var co_phn=$.trim($('#company_phone').val());
var co_email=$.trim($('#company_email').val());
var errmsg='';
var c=0;
var cur_el='';
//var em=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
var alphaExp = /^[a-zA-Z]+$/;
// var alphaNum = /^[0-9a-zA-Z]+$/;
var digit = /^[0-9]+$/;
var fdigit=/^[0]+$/;
var emailval = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+/;
var con=/^\(?([0-9]{2})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/;
if(co_name=='' || co_name==null)
{
errmsg="Enter Company name";
cur_el=$('#company_name');
c=1;
}
else if(co_pcntact=='' || co_pcntact==null)
{
errmsg="enter Person Contact name";
cur_el=$('#company_contact_person');
c=1;
}
else if(co_add=='' || co_add==null)
{
errmsg="please enter company address";
cur_el=$('#company_address');
c=1;
}
else if(co_phn=='' || co_phn==null)
{
errmsg="please enter company phone no";
cur_el=$('#company_phone');
c=1;
}
else if(fdigit.test(co_phn)){
errmsg="first digit must be non zero";
cur_el=$('#company_phone');
c=1;
}
else if(co_phn.length<10)
{
errmsg="please give 10 digit no";
cur_el=$('#company_phone');
c=1;
}
else if(co_email=='' || co_email==null)
{
errmsg="Enter your email";
cur_el=$('#company_email');
c=1;
}
else if (!emailval.test(co_email)) {
errmsg='Please provide a valid email address (hints : daskoushik9@gmail.com)';
cur_el=$('#company_email');
c=1;
}
if(c==1 && errmsg!=''){
alert(errmsg);
cur_el.focus();
return false;
}
else
{return true;}
// else if(file=='')
// {
// errmsg="upload your photo";
// cur_el=$('#uploadfile');
// c=1;
// }
// else if(fdigit.test(phone)){
// errmsg="first digit must be non zero";
// cur_el=$('#phone');
// c=1;
// }
}
function jobaddvalidation(){
var errmsg='';
var c=0;
var cur_el='';
//var em=/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/;
var alphaExp = /^[a-zA-Z]+$/;
// var alphaNum = /^[0-9a-zA-Z]+$/;
var digit = /^[0-9]+$/;
var fdigit=/^[0]+$/;
var emailval = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z])+/;
var con=/^\(?([0-9]{2})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/;
var jtitle=$.trim($('#job_title').val());
var jsummery=$.trim($('#job_summery').val());
// var jdescription=$.trim($('#job_description').val());
var cid=$.trim($('#category_id').val());
var jreq=$.trim($('#job_requirements').val());
var jcdetails=$.trim($('#job_contact_details').val());
var jcpname=$.trim($('#job_contact_person_name').val());
var jcpemail=$.trim($('#job_contact_person_email').val());
var jacdetails=$.trim($('#job_additional_contact_details').val());
var jscopy='';
if(document.form1.job_scan_copy.checked){
jscopy=$.trim($('#job_scan_copy').val());
}
var jnscopy='';
jnscopy=$.trim($('#job_no_scan_copy').val());
var jloc=$.trim($('#job_location').val());
var jctc=$.trim($('#job_ctc').val());
var jureq=$.trim($('#job_upload_requirement').val());
if(jtitle==null || jtitle=='')
{
errmsg="please give job title";
cur_el=$('#job_title');
c=1;
}else if(jsummery==null || jsummery=='')
{
errmsg="please give job summery ";
cur_el=$('#job_summery');
c=1;
}
// else if(jdescription==null || jdescription=='')
// {
// errmsg="please mention job description";
// cur_el=$('#job_description');
// c=1;
// }
else if(cid==null || cid=='')
{
errmsg="please give category name";
cur_el=$('#category_id');
c=1;
}else if(jreq==null || jreq=='')
{
errmsg="please give job requirement";
cur_el=$('#job_requirements');
c=1;
}
else if(jcdetails==null || jcdetails=='')
{
errmsg="please give job contact details";
cur_el=$('#job_contact_details');
c=1;
}else if(jcpname==null || jcpname=='')
{
errmsg="please give job contact person name";
cur_el=$('#job_contact_person_name');
c=1;
}else if(jcpemail==null || jcpemail=='')
{
errmsg="please give job contact person email";
cur_el=$('#job_contact_person_email');
c=1;
}else if(!emailval.test(jcpemail))
{
errmsg="please give valid job contact person email";
cur_el=$('#job_contact_person_email');
c=1;
}else if(jacdetails==null || jacdetails=='')
{
errmsg="please give job additional contact details";
cur_el=$('#job_additional_contact_details');
c=1;
}else if((jscopy!='' && jnscopy=='') || (jscopy=='' && jnscopy!=''))
{
errmsg="please give both scan copy and no scan copy OR both un select";
cur_el=$('#job_scan_copy');
c=1;
}else if(jloc==null || jloc=='')
{
errmsg="please mention job location";
cur_el=$('#job_location');
c=1;
}else if(jctc==null || jctc=='')
{
errmsg="please mention job C T C";
cur_el=$('#job_ctc');
c=1;
}
if(c==1 && errmsg!=''){
alert(errmsg);
cur_el.focus();
return false;
}
else
{return true;}
}