I have a form in html which I want to run verification in Javascript first before POST ing to PHP. However the link up to the PHP section does not seem to be working despite the fact that I have assigned names to each input tag and specified an action attribute in the form tag.
Here is the HTML code for the form:
<form id="signupform" action="signupform.php" method="post">
<input type="text" name="Email" placeholder="Email Address" class="signupinput" id="email" />
<br />
<input type="password" name="Password" placeholder="Password" class="signupinput" id="passwordone" />
<br />
<input type="password" placeholder="Repeat Password" class="signupinput" id="passwordtwo" />
<br />
<input type="button" value="Sign Up" class="signupinput" onClick="verifypass()" id="submit" />
</form>
The button calls the javascript function which I use to verify the values of my form before sending to php:
function verifypass() {
var form = document.getElementById("signupform");
var email = document.getElementById("email").value;
var password1 = document.getElementById("passwordone").value;
var password2 = document.getElementById("passwordtwo").value;
var emailcode = /^(([^<>()\[\]\\.,;:\s#"]+(\.[^<>()\[\]\\.,;:\s#"]+)*)|(".+"))#((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
if (emailcode.test(email)) {
if (password1.length > 6) {
if (password1 == password2) {
form.submit(); //this statement does not execute
} else {
$("#passwordone").notify("Passwords do not match!", {
position: "right"
})
}
} else {
$("#passwordone").notify("Password is too short!", {
position: "right"
})
}
} else {
$("#email").notify("The email address you have entered is invalid.", {
position: "right"
})
}
}
For some reason, some JavaScript implementations mix up HTML element IDs and code. If you use a different ID for your submit button it will work (id="somethingelse" instead of id="submit"):
<input type="button" value="Sign Up" class="signupinput" onClick="verifypass()" id="somethingelse" />
(I think id="submit" has the effect that the submit method is overwritten on the form node, using the button node. I never figured out why, perhaps to allow shortcuts like form.buttonid.value etc. I just avoid using possible method names as IDs.)
I'm not sure why that's not working, but you get around having to call form.submit(); if you use a <input type="submit"/> instead of <input type="button"/> and then use the onsubmit event instead of onclick. That way, IIRC, all you have to do is return true or false.
I think it would be better if you do it real time, for send error when the user leave each input. For example, there is an input, where you set the email address. When the onfocusout event occured in Javascript you can add an eventlistener which is call a checker function to the email input.
There is a quick example for handling form inputs. (Code below)
It is not protect you against the serious attacks, because in a perfect system you have to check on the both side.
Description for the Javascript example:
There is two input email, and password and there is a hidden button which is shown if everything is correct.
The email check and the password check functions are checking the input field values and if it isn't 3 mark length then show error for user.
The showIt funciton get a boolean if it is true it show the button to submit.
The last function is iterate through the fields object where we store the input fields status, and if there is a false it return false else its true. This is the boolean what the showIt function get.
Hope it is understandable.
<style>
#send {
display: none;
}
</style>
<form>
<input type="text" id="email"/>
<input type="password" id="password"/>
<button id="send" type="submit">Send</button>
</form>
<div id="error"></div>
<script>
var fields = {
email: false,
password: false
};
var email = document.getElementById("email");
email.addEventListener("focusout", emailCheck, false);
var password = document.getElementById("password");
password.addEventListener("focusout", passwordCheck, false);
function emailCheck(){
if(email.value.length < 3) {
document.getElementById("error").innerHTML = "Bad Email";
fields.email = false;
} else {
fields.email = true;
document.getElementById("error").innerHTML = "";
}
show = checkFields();
console.log("asdasd"+show);
showIt(show);
}
function passwordCheck(){
if(password.value.length < 3) {
document.getElementById("error").innerHTML = "Bad Password";
fields.password = false;
} else {
fields.password = true;
document.getElementById("error").innerHTML = "";
}
show = checkFields();
console.log(show);
showIt(show);
}
function showIt(show) {
if (show) {
document.getElementById("send").style.display = "block";
} else {
document.getElementById("send").style.display = "none";
}
}
function checkFields(){
isFalse = Object.keys(fields).map(function(objectKey, index) {
if (fields[objectKey] === false) {
return false;
}
});
console.log(isFalse);
if (isFalse.indexOf(false) >= 0) {
return false;
}
return true;
}
</script>
Related
I'm trying to create a fun little registration sheet to practice my validation. When I hit the submit button I have two issues. The first issue is my form keeps clearing every input field the moment I hit submit. I tried to use have my onclick = return false but this did nothing. The next issue I'm having is when I hit submit nothing happens at all. I'm not sure where I have messed up but if someone could point it out to me.
<!-- create a function to validate and pass information along -->
function Validation() {
<!-- declare variables -->
var ifErrors = false;
<!-- create the array to display error messages when cycled through -->
var ErrorMessage = new Array();
var myUserName = document.getElementById("txtUsername").value;
var myPassword = document.getElementById("txtPassword").value;
var myFirstName = document.getElementById("txtFirstName").value;
var myLastName = document.getElementById("txtLastName").value;
var myDateOfBirth = document.getElementById("txtDateOfBirth").value;
var myEmail = document.getElementById("txtEmail").value;
var myPhoneNumber = document.getElementById("txtPhoneNumber").value;
var LettersOnly = /^[a-z]+$/;
var DateOfBirthValidate = /^(0[1-9]|1[0-2])\/(0[1-9]|1\d|2\d|3[01])\/(19|20)\d{2}$/;
var Dates = new Date();
var DateSupplied = document.getElementById("txtDateOfBirth").value;
var PhoneNumberValidate = /^\([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/;
<!-- Begin validation -->
//validate for username being blank
if (myUserName = "")
{
ifErrors = true;
ErrorMessage.push('Username is required');
}
//validate for username not being 8 or more characters
if(myUserName.length < 8)
{
ifErrors = true;
ErrorMessage.push('Username must be 8 or more characters');
}
//validate for password being blank
if (myPassword == "")
{
ifErrors = true;
ErrorMessage.push('Password is required');
}
//validate for password not being 8 or more characters
if (myPassword.length < 8)
{
ifErrors = true;
ErrorMessage.push('Password must be 8 or more characters');
}
//validate for first name being blank
if (myFirstName == "")
{
ifErrors = true;
ErrorMessage.push('First name can not be blank');
}
//validate for last name being blank
if (myLastName == "")
{
ifErrors = true;
ErrorMessage.push('Last name can not be blank');
}
//validate for date of birth being blank
if (myDateOfBirth == "")
{
ifErrors = true;
ErrorMessage.push('Last name can not be blank');
}
//validate for date of birth not being formatted like (MM/DD/YYYY)
if (document.getElementById("txtDateOfBirth").value.length > 1)
{
if (! (txtDateOfBirth,valueOf().match(DateOfBirthValidate)));
{
ifErrors = true;
ErrorMessage.push('not a valid date of birth');
}
}
//create a variable to hold date, and see if it's greater than the current date
DateSupplied = new Date(DateSupplied);
if (DateSupplied > Dates)
{
ifErrors = true;
ErrorMessage.push('Date supplied can not be greater than the current date');
}
//va;idate for phone number
if (document.getElementById("txtPhoneNumber").value.length > 1)
{
if (! (txtPhoneNumber.valueOf().match(PhoneNumberValidate)))
{
ifErrors = true;
ErrorMessage.push('Phone number is not valid');
}
}
//successful validation
if (ifErrors == false)
{
ifErrors = true;
alert('Your registration has been processed');
//document.getElementById("RegisterForm").reset();
}
//Display list of messages in list
var DisplayMessage = "";
ErrorMessage.forEach(function (message)
{
DisplayMessage += "<li>" + message + "</li>";
}
);
document.getElementById("Errors").innerHTML = DisplayMessage;
}
<body>
<h3>Registration</h3>
<div>
<ul id="Errors"> </ul>
</div>
<br/>
<form ="RegisterForm">
<label id="lblUsername">Username:</label>
<input type="text" id="txtUsername" />
<br/>
<label id="lblPassword">Password:</label>
<input type="password" id="txtPassword" />
<br/>
<label id="lblFirstName">First Name:</label>
<input type="text" id="txtFirstName" />
<br/>
<label id="lblLastName">Last Name:</label>
<input type="text" id="txtLastName" />
<br/>
<label id="lblDateOfBirth">Date of Birth:</label>
<input type="text" id="txtDateOfBirth" />
<br/>
<label id="lblEmail">Email:</label>
<input type="text" id="txtEmail" />
<br/>
<label id="lblPhoneNumber">Email:</label>
<input type="text" id="txtPhoneNumber" />
<br/>
<input type="submit" value="Submit" onclick="Validation(); return false;" />
<input type="reset" value="reset Form" />
</form>
</body>
return false; does not stop the form from being submitted.
In order to achieve this behavior, you have to call .preventDefault() on the click event of the <input>, or on the submit event of the <form>. Example:
<form>
<input type="submit" onclick="someFn(event)">
</form>
<script>
function someFn(e) {
e.preventDefault();
console.log('form not submitted...');
}
</script>
To prevent all submit events in one go (regardless of which form element initiated it) you can call .preventDefault() on the form's onsubmit handler parameter (which is the submit event):
<form onsubmit="someFn(event)">
<input type="submit">
<button>Submit</button>
</form>
<script>
function someFn(e) {
e.preventDefault();
console.log('form not submitted...');
}
</script>
As a side-note, the submit input does not clear out your form. It sends it.
Because you haven't specified an action attribute on your <form> element, the submission is sent to the current URL.
Which, in practice, reloads the page.
Which, in practice renders a brand new instance of the form, obviously empty.
This is also the reason why "nothing happens at all". The default browser behavior when submitting a form is to actually load the <form>'s action URL (whether it's explicitly specified or not). You're navigating to that URL, along with the form's values. Which means you're not allowing the browser to finish running the code in Validation();. To wait around and see the results of Validation function, you have to prevent the default form submission behavior.
Docs:
<form>: MDN, HTML (Living Standard)
<input type="submit">: MDN, HTML (Living Standard)
Event.preventDefault(): MDN, DOM (Living Standard)
I am trying to build a login.js script that listens for the login form submit event. When I try to run my code, it's not logging in or working properly
I' working with JavaScript, which is requested to use. I built the login form in HTML and have worked on the login function within JavaScript. It can;t be inline JavaScript, it has to be a separate script from HTML.
var count = 2;
function validate() {
var un = document.login.username.value;
var pw = document.login.password.value;
var valid = false;
var usernameArray = ["adrian#tissue.com",
"dduzen1#live.spcollege.edu",
"deannaduzen#gmail.com"
]
var passwordArray = ["welcome1", "w3lc0m3", "ch1c#g0"]
for (var i = 0; i < usernameArray.length; i++) {
if ((un == usernameArray[i]) && (pw == passwordArray[i])) {
valid = true;
break;
}
}
if (valid) {
alert("Login is successful");
window.location = "index.html";
return false;
}
var again = "tries";
if (count == 1) {
again = "try"
}
if (count >= 1) {
alert("Wrong username or password")
count--;
} else {
alert("Incorrect username or password, you are now blocked");
document.login.username.value = "You are now blocked";
document.login.password.value = "You are now blocked";
document.login.username.disabled = true;
document.login.password.disabled = true;
return false;
}
}
<!-- start of login form -->
<div class="login-page">
<div class="form">
<form class="register-form" onsubmit="return validate() ;" method="post">
<input type="text" placeholder="username" />
<input type="text" placeholder="password" />
<input type="text" placeholder="email id" />
<button>Create</button>
<p class="message">Already registered? Login
</p>
</form>
<form class="login-form">
<input type="text" placeholder="username" />
<input type="text" placeholder="password" />
<button>login</button>
<p class="message">Not registered? Register
</p>
</form>
</div>
</div>
It needs to allow the three login information I put into the code to log into the site. When logging in, it blinks as if it's doing something, but isn't going anywhere nor does it show that the person is logged in.
You are not validating correctly with the return sentence, also your onsubmit attribute was in the register form.
Use name attribute on forms
This will help you to identify your forms and inputs easily with JavaScript, otherwise you might have problems identifying which input is which in larger forms.
<form name="login" class="login-form">
<input name="user" type="text" placeholder="username" />
<input name="pass" type="text" placeholder="password" />
<button>login</button>
<p class="message">Not registered? Register
</p>
</form>
With this applied to your login form, you can reference it by doing document.login.
Take advantage over native HTML events in JavaScript
The way you are retrieving the username and password is a lot complex that it should, you can add an event listener in JavaScript and handle everything there:
const loginForm = document.login;
loginForm.addEventListener("submit", validate);
This will call validate every time the form is submitted. Also, it sends the event as a parameter, so you can receive it like this in your function:
function validate(event) {
event.preventDefault(); // Stop form redirection
let user = event.target.user.value,
pass = event.target.pass.value;
// REST OF THE CODE ...
}
This is easier since we added name attributes to the inputs, so we can identify them by user and pass.
Validation
NOTE: I do not recommend validating username:password data directly in the browser, since this is a big vulnerability and must be validated server-side.
You can simplify this validation by binding the username with its password in an object, instead of creating two arrays:
const accounts = {
"adrian#tissue.com": "welcome1",
"dduzen1#live.spcollege.edu": "w3lc0m3",
"deannaduzen#gmail.com": "ch1c#g0"
};
And then, having the inputs value saved in user and pass variables, you can do:
if (accounts[user] == pass) {
//SUCCESSFUL LOGIN
console.log('Correct. Logged in!');
} else {
//WRONG LOGIN CREDENTIALS
attempts--;
validateAttempts();
}
With the purpose of not having a lot of code in sight, you should create another function that its only job is to validate if you should block the user or not.
The result
I should mention that this will only work to validate the user form, if you need to save a session and keep an user logged in, you must use a server-side language.
I leave you a snippet with all of this changes working, see it for yourself:
const accounts = {
"adrian#tissue.com": "welcome1",
"dduzen1#live.spcollege.edu": "w3lc0m3",
"deannaduzen#gmail.com": "ch1c#g0"
};
const loginForm = document.login;
let attempts = 3;
loginForm.addEventListener("submit", validate);
function validate(event) {
event.preventDefault();
let user = event.target.user.value,
pass = event.target.pass.value;
if (accounts[user] == pass) {
//SUCCESSFUL LOGIN
console.log('Correct. Logged in!');
} else {
console.log('Wrong username or password.');
attempts--;
validateAttempts()
}
}
function validateAttempts() {
if (attempts <= 0) {
console.log("You are now blocked");
loginForm.user.value = "You are now blocked";
loginForm.pass.value = "You are now blocked";
loginForm.user.disabled = true;
loginForm.pass.disabled = true;
}
}
<form name="login" class="login-form">
<input name="user" type="text" placeholder="username" />
<input name="pass" type="text" placeholder="password" />
<button>login</button>
<p class="message">Not registered? Register
</p>
</form>
I've got two text boxes for first and last name. I also have a button to save the data. The button has an event handler where it grabs the data from the fields and posts them with an ajax call to my API, using jquery.
I want validation on my two textboxes (so they can't be left blank), but I don't know how to trigger that when my button is pressed. I am not using the <form> tag for this; I'm doing an ajax call when the button is pressed.
Here is an example which may help you:
$('#save').click(function() {
var errors = [];
var name = $('#name').val();
var vorname = $('#vorname').val();
if (!name) {
errors.push("Name can't be left blank");
}
if (!vorname) {
errors.push("Vorname can't be left blank");
}
if (errors.length == 0) {
console.log('Ajax started');
//put here your ajax function
} else {
for (var i in errors) {
console.log(errors[i]);
}
}
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input placeholder="Name" id="name"><br>
<input placeholder="Vorname" id="vorname"><br>
<button id="save">Save</button>
here is an example using the popular add on jquery validate. https://jqueryvalidation.org/
click the run snippet button below
$(document).ready(function() {
$("#form").validate({
rules: {
"firstname": {
required: true,
},
"lastname": {
required: true,
}
},
messages: {
"firstname": {
required: "Please, enter a first name"
},
"lastname": {
required: "Please, enter a last name"
},
},
submitHandler: function(form) { // for demo
alert('valid form submitted'); // for demo
return false; // for demo
}
});
});
body {
padding: 20px;
}
label {
display: block;
}
input.error {
border: 1px solid red;
}
label.error {
font-weight: normal;
color: red;
}
button {
display: block;
margin-top: 20px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.0/jquery.validate.min.js"></script>
<form id="form" method="post" action="#">
<label for="firstname">First Name</label>
<input type="text" name="firstname" id="firstname" />
<label for="lastname">Last Name</label>
<input type="text" name="lastname" id="lastname" />
<button type="submit">Submit</button>
</form>
Without seeing your code, it is very difficult to guess the correct scenario to provide examples for.
Given the following HTML:
<form>
<input type="text" class="text1">
<input type="text" class="text2">
<button type="button">Send</button>
</form>
You could use this for the jQuery part:
$('button').click(function() {
var txt1 = $(this).siblings('.text1').val();
var txt2 = $(this).siblings('.text2').val();
if (txt1.length && txt2.length) {
// do your ajaxy stuff here
} else {
alert("Imput some friggin' text!");
}
});
$(this) selects the button clicked.
.siblings('.text1') selects the input with class text1 inside the same block as the clicked button.
https://jsfiddle.net/sg1x0c3q/7/
As per my comments I would recommend using a form. But if you want a pure JS solution here you go. (if you want a form based solution just ask)
// convert all textareas into key value pairs (You can change the selector to be specific to your markup)
const createPayload = () => {
return [].slice.call(document.querySelectorAll('textarea')).reduce((collection, textarea) => ({
...collection,
[textarea.name]: textarea.value
}), {})
}
// Compare Object values against values that are not falsy (you could update the filter with a RegExp if you wanted more complicated validation)
const objectHasAllValues = obj => {
return Object.values(obj).length == Object.values(obj).filter(value => value).length
}
// If all key value pairs are not falsy then submit
window.submit = () => {
const payload = createPayload()
if (objectHasAllValues(payload)) {
fetch('/your/api', payload)
}
}
This solution presumes that your API expects a JSON payload. If you are expecting to send form data then you would need to use the formData js api.
This scales and doesn't need jQuery :)
Working example here https://jsfiddle.net/stwilz/dxg29mkj/28/
I want validation on my two textboxes (so they can't be left blank), but I don't know how to trigger that when my button is pressed. I am not using the <form> tag for this; I'm doing an ajax call when the button is pressed.
Answer to form validation. I assume that First name and Last name can only contain alphabets ,i.e., only a-z and A-Z.
//This function will trim extra whitespaces form input.
function trimInput(element){
$(element).val($(element).val().replace(/\s+/g, " ").trim());
}
//This function will check if the name is empty
function isEmpty(s){
var valid = /\S+/.test(s);
return valid;
}
//This function will validate name.
function isName(name){
var valid = /^[a-zA-Z]*$/.test(name);
return valid;
}
$('#myForm').submit(function(e){
e.preventDefault();
var fname = $(this).find('input[name="fname"]');
var lname = $(this).find('input[name="lname"]');
var flag = true;
trimInput(fname);
trimInput(lname);
if(isEmpty($(fname).val()) === false || isName($(fname).val()) === false){
alert("First name is invalid.");
flag = false;
}
if(isEmpty($(lname).val()) === false || isName($(lname).val()) === false){
alert("Last name is invalid.");
flag = false;
}
if(flag){
alert("Everything is Okay");
//Code to POST form data goes here...
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form name="myform" id="myForm" method="post" action="#">
<input type="text" name="fname" placeholder="Firstname">
<input type="text" name="lname" placeholder="Last Name">
<input type="submit" name="submit" value="Submit">
</form>
I am not using the <form> tag for this.
Then the code will be like
//This function will trim extra whitespaces form input.
function trimInput(element) {
$(element).val($(element).val().replace(/\s+/g, " ").trim());
}
//This function will check if the name is empty
function isEmpty(s) {
var valid = /\S+/.test(s);
return valid;
}
//This function will validate name.
function isName(name) {
var valid = /^[a-zA-Z]*$/.test(name);
return valid;
}
$('#submit').click(function() {
var fname = $('#fname');
var lname = $('#lname');
var flag = true;
trimInput(fname);
trimInput(lname);
if (isEmpty($(fname).val()) === false || isName($(fname).val()) === false) {
alert("First name is invalid.");
flag = false;
}
if (isEmpty($(lname).val()) === false || isName($(lname).val()) === false) {
alert("Last name is invalid.");
flag = false;
}
if (flag) {
alert("Everything is Okay");
//Code to POST form data goes here...
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="fname" name="fname" placeholder="Firstname">
<input type="text" id="lname" name="lname" placeholder="Last Name">
<button type="button" id="submit" name="submit">Submit</button>
Check the code on jsFiddle.
Hope this will be helpful.
I am trying to validate a form using javascript, Here is my code
<script type="text/javascript">
function prevSubmit(){
var oForm = document.forms[0];
var pass1= oForm.elements["passwd"];
var pass2=oForm.elements["repasswd"];
var flag = 1;
if (pass1.value.length>16) {
document.getElementById("passError").innerHTML = "password may atleast 16 chars";
flag = 0;
}
else
document.getElementById("passError").innerHTML = "";
if(pass1.value<=16 && pass1.value!=pass2.value)
{
document.getElementById("passError").innerHTML = "password must be same";
flag = 0;
}
else
document.getElementById("passError").innerHTML = "";
return flag;
}
</script>
and here is my form element,
<form id="registration_form" action="registration.php" method="post" onsubmit="return prevSubmit();">
<p>
<label>Name</label>
<input type="text" name="name"/>
<span id="NameError"></span>
</p>
<p>
<label>Email</label>
<input type="text" name="email"/>
<span id="emailError"></span>
</p>
<p>
<label>Password</label>
<input type="password" name="passwd"/>
<span id="passError"></span>
</p>
<p>
<label>Repeat Password</label>
<input type="password" name="repasswd"/>
</p>
<input type="submit" class="button" value="sign up"/>
</form>
what I am trying to accomplish is check the password, if no match or greater than 16, then show the message and prevent submission, but its not working, Why?
Use true and false as the values of flag, not 1 and 0. You have to return false to prevent submission, anything else allows submission.
First this error message makes no sense
password may atleast 16 chars
Secondly, your second error check is wrong
if(pass1.value<=16 && pass1.value!=pass2.value)
You are saying if the value is less that the number 16 and the two values do not match.
Why would the value be less that 16? The check should just be
if (pass1.value!=pass2.value)
ANd as the others suggested, use true/false, not 1 and 0 as truthy values.
I agree with answers of Barmar and epascarello.
The if conditions should be implemented in this way:
var oForm = document.forms[0];
var pass1= oForm.elements["passwd"];
var pass2=oForm.elements["repasswd"];
var ctrlError = document.getElementById("passError");
if (pass1.value.length < 16) {
ctrlError.innerHTML = "Password must be at least 16 characters long.";
return false;
}
else if (pass1.value != pass2.value) {
ctrlError.innerHTML = "Passwords do not match.";
return false;
}
else {
ctrlError.innerHTML = "";
return true;
}
just "return false" from javascript method
<input type="submit" class="button" value="sign up" onclick="javascript:return myFunc();"/>
function myFunc()
{
return false;
}
this is basic example of how to prevent submission of form, if we return false then browser/javascript engine prevent further propagation of click event and submission is prevented.
I have some input form on names: owner, number, city
<input id="id_owner" type="text" name="owner" maxlength="250" />
<input id="id_number" type="text" name="number" maxlength="250" />
<input id="id_city" type="text" name="city" maxlength="250" />
How to check if the user has not entered the data to a form (befor sending) that does not show this dialog from this code:
<a type="submit" name"save-continue-to-review" data-toggle="modal" data-target="#dialog" href=""
class="btn primary btn-primary" title="Order">Order
</a>
and it will show another
Here is full code: http://wklej.org/id/927806/
Eventually you'll be able to use HTML5 form validation. But until then, use some jQuery code like this. (only because you tagged the question with jQuery. You could potentially do it with vanilla JS.)
(un-tested code, but should work)
var fields = $('input')
$('form').submit(function(e){
e.preventDefault()
valid = true
fields.each(function(){
if ($(this).val() == null) {
valid = false
}
});
if (valid == true) {
$('form').submit()
} else {
alert("At least one field was not valid!")
}
});
1) Add this on your form
onsubmit="return validateForm(this);"
2)The validate function (checks if fields are empty)
function validateform(formObj)
{
inputs = formObj.GetElementsByTagName('input');
for(i=0; i < inputs.length; i++)
{
if($.trim(inputs[i].value) == '')
{
alert('Field: ' + inputs[i].name + ' is empty!');
return false;
}
}
return true;
}
if ( !$(this).val() ) {
valid = false
}
maybe this post is useful for you