How to Prevent Users from Submitting a Form Twice

Question

when user click add button twice, from get submitted twice with same dat

Answer 1

Create a class for the form, in my case I used: _submitlock

$(document).ready(function () {
  $(document).on('submit', '._submitlock', function (event) {

      // Check if the form has already been submitted
      if (!$(this).hasClass('_submitted')) {
          // Mark the form as submitted
          $(this).addClass('_submitted');

          // Update the attributes of the submit buttons
          $(this).find('[type="submit"]').attr('disabled', 'disabled');
          // Add classes required to visually change the state of the button
          $(this).find('[type="submit"]').addClass("buttoninactive");
          $(this).find('[type="submit"]').removeClass("buttonactive");

      } else {
          // Prevent the submit from occurring.
          event.preventDefault();
      }

  });});