How Can I Prevent Double Form Submissions with jQuery?

Preventing Double Form Submissions with jQuery

In certain scenarios, it becomes imperative to prevent users from resubmitting forms while the server is still processing the initial submission. This article provides a solution to this issue using jQuery, promising to preserve form functionality while inhibiting double submissions effectively.

jQuery Code Causing Issues

Your initial jQuery code disables all form elements, including the submit button, which results in the form not being submitted. Disabling only the submit button is crucial, as multiple buttons might exist with different functionalities.

Revised Solution

A revised solution utilizes data attributes in jQuery to prevent double submissions without modifying submit buttons. Here's the improved code:

jQuery.fn.preventDoubleSubmission = function() {
    $(this).on('submit',function(e){
        var $form = $(this);

        if ($form.data('submitted') === true) {
            // Previously submitted - don't submit again
            e.preventDefault();
        } else {
            // Mark it so that the next submit can be ignored
            $form.data('submitted', true);
        }
    });

    // Keep chainability
    return this;
};

Usage

To implement this solution, simply invoke the preventDoubleSubmission function on the form element:

$('form').preventDoubleSubmission();

Handling AJAX Forms

If specific forms should allow multiple submissions within a page load, you can exclude them using a class:

$('form:not(.js-allow-double-submission)').preventDoubleSubmission();

By incorporating this improved solution, you can effectively prevent double form submissions in your web applications, ensuring a seamless user experience and avoiding potential data inconsistencies.

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