How to disable or enable a form element using jQuery


Use the jQuery prop() method

You can simply use the jQuery prop() method to disable or enable form elements or controls like <input><select><textarea>, etc. dynamically using jQuery.

The prop() method require jQuery 1.6 and above. Let's see how this works:

<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8">
<title>Disable or Enable an Input with jQuery</title>
    label {
        display: block;
        margin: 10px 0;
<script src=""></script>
        $('form input[type="submit"]').prop("disabled", true);
            if($(this).prop("checked") == true){
                $('form input[type="submit"]').prop("disabled", false);
            else if($(this).prop("checked") == false){
                $('form input[type="submit"]').prop("disabled", true);
        <label>Name: <input type="text" name="username"></label>
        <label>Email: <input type="email" name="email"></label>
        <label><input type="checkbox" class="agree"> I agree to terms and conditions.</label>
        <input type="submit" value="Submit">