jQuery check if all required inputs from a form are not empty

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Imagine a simple form with method POST and 30 inputs.

I would like to create a jQuery function that will be called from submit button. I searched about how to check all inputs that are required, but didn't find anything to help.

I would like something like this:

var inputs_required = all inputs from my form which have attribute required;
function check_required_inputs() {
   if(inputs_required != "") {
     //create ajax with serialize() and submit form;
} else {
   //highlight inputs that are empty and show a message;

Can this be achieved in jQuery?

You could give all your required inputs a common class (required for example) then use each() to loop through them like :

function check_required_inputs() {
        if( $(this).val() == "" ){
          alert('Please fill all the fields');

          return false;
    return true;

How to check if all inputs are not empty with jQuery, This should look all the input and set the empty var to false, if at least one is not empty. $('form input[type!=submit]').each(function(){ //If the field's empty if($(this)​.val() if (!isFormValid) { alert("Please fill in all the required fields (indicated by  In my app the business owner can enter the services he offer in various input fields.Before clicking the save button a check is made to see if the inputs are filled or not. And here is the problem

Zakaria already posted an answer, which should work great. Alternatively, instead of having a custom class, you could instead find all input, textarea and select elements that have the attribute required and are visible using

var required = $('input,textarea,select').filter('[required]:visible');

And then iterate through them using each() etc.


var allRequired = true;
    if($(this).val() == ''){
        allRequired = false;


Check if inputs form are empty jQuery, Javascript function to check if a field in a html form is empty or not. Exercises jQuery Exercises jQuery-UI Exercises CoffeeScript Exercises PHP At first the function required() will accept the HTML input value Parse an HTTP Cookie header string and return an object of all cookie name-value pairs. You simply give the inputs the required="true" attribute, then all empty required inputs will have the pseudo class :invalid. jQuery ('input:invalid') gives you a list of all invalid inputs. .length will give you the length of said list, if the length is > 0, your form is invalid. share.

jQuery('button').on('click', function() {
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" required="true" />

JavaScript : HTML form - Checking for non empty, Data validation is the process of ensuring that user input is clean, correct, and useful. Typical validation tasks are: has the user filled in all required fields? has the  Hopefully, your users should be able to use the real-time validation to see whether they have made any errors. However, it's possible they don't notice the red box or understand why their input is not validating. Therefore, we'll double check that all the fields are valid when the submit button is pushed.

you can try this assume that the form has an ID of form-action and submit button of ID form- submit.

var submitButton = $('#form-submit'),
    formContainer  = $('#form-action');

        if(ele.value === null || ele.value === ''){
            var error  = " the " + ele.name + " field  is requird ";

JavaScript Form Validation, In the previous chapter, all input fields were optional. In the following This checks if the $_POST variable is empty (with the PHP empty() function). If it is empty,  Checking if an input is empty with CSS 12th Dec 2018. Is it possible to know if an input is empty with only CSS? I had that question when I tried to make an autocomplete component for Learn JavaScript. Basically, I wanted to: Hide a dropdown if the input is empty; Show the dropdown if the input is filled; I found a way to do it. It’s not perfect.

You could also leverage the iterable function, every(), which will either return true only if every input validation is satisfied or false if otherwise:

function check_required_inputs() {
   var valid =  Array.prototype.every.call($('.required'), function(input) {
     return input.value;

   if (valid) {
     return true;
   } else {
     alert('Please fill all the fields');

     return false;

PHP Forms Required Fields, HI this is my code for checking bs3 form input fields, not working. can I get help? <! $('#yourname').val(); // Check if empty of not if (name.length < 1) { alert('Text-​field is empty. You don't have a class of yourname in your page at all. name" name="name" required> </div> <div class="form-group"> <label  It is essentially the same as the previous demo but checks all inputs with a class of input-check. When the submit button is clicked it cycles through all the inputs and calls the same function as

Check empty input with jquery - JavaScript, This article shows you how to check if an input is empty with JavaScript. If you want to validate the input when a user submits a form, you can use the submit However, if the user removes all text from the field, the input  Find jQuery code to check if all the input type 'text' element or textboxes are empty or not. This is quite useful for validation. This jQuery code loops through all the textboxes and check their value. If value is empty then it adds a red color border to let user know that this field is required.

Checking if an input is empty with JavaScript, The “:empty” selector is used to select all the elements that have no children. It will return true if the element is empty, otherwise, return false. Syntax: $(  Currently I'm having a big form, with steps and a lot of complex fields. To make sure the user fills the required inputs and don't make them crazy pushing down the button submit when one required field on step 3 of 6 is no filled in, I decided to disable the button so they can see fast something is not right and check the form back.

How to check an HTML element is empty using jQuery , How do you check the submitted form for missing fields? There's an easy way. Wrap all the required form fields in the HTML with the “ss-item-required” class as label> <input type="radio" name="sex" value="male">Male <input all the fields in the array and if anyone is blank (or has no value), the user is  </form> Step 2) Add JavaScript: If an input field (fname) is empty, this function alerts a message, and returns false, to prevent the form from being submitted:

  • if your form has inputs with required you cannot submit the form and a message is show already by html5. you form will have a :valid and :invalid state to access via css
  • I know. You are right. As long as an input with attribute required is not filled, html5 should return error and highlight that error. Still, my form is submiting through ajax and the submit script is executing.
  • This is so simple and useful. With the :visible selector we make sure it gets only the inputs from the current tab.
  • This is an elegant answer to be certain.
  • great :) just note that the example will not work for select, as .val() does not provide value of select - need to get option:selected.
  • I wish people who downvote a question would leave a comment so I'd learn what to improve on my answers.