I have been scratching my head the past two hours trying to figure out why my .js file is not enqueuing from my plugin. The prototype.php file of the code is as follows:

 * Plugin Name: Prototype Insert
 * Description: Insert prototype data into database
 * Version: 1.0.0
 * Author: Pierce Burnett
 * License: GPL2

add_action( 'wp_enqueue_scripts', 'ajax_test_enqueue_scripts' );
function ajax_test_enqueue_scripts() {
    wp_enqueue_script( 'prototype', plugins_url( '/prototype.js', __FILE__ ), array('jquery'), '1.0', true );

    wp_localize_script( 'prototype', 'postprototype', array(
        'ajax_url' => admin_url( 'admin-ajax.php' )


add_action( 'wp_ajax_nopriv_post_prototype', 'post_prototype' );
add_action( 'wp_ajax_post_prototype', 'post_prototype' );

function post_prototype() {
    global $wpdb;

    $prototype_user_id = get_current_user_id();
    $prototype_product_ID = $_REQUEST['productid'];
    $prototype_link = $_REQUEST['link'];
    $prototype_project_link = $_REQUEST['project_link'];

        'user_id' => $prototype_user_id, 
        'project_id' => $prototype_product_ID, 
        'download_link' => $prototype_link,
        'project_link' => $prototype_project_link

And the following is my JavaScript prototype.js

    //AJAX for prototype list when downloaded 

jQuery(document).on('click', '.hasprototype a', function(event){
        var linkPrototype = jQuery(this).attr('href');
        var prototypeProductID = jQuery('.single-ignition_product .breakout-out').data('productid');
        url : postprototype.ajax_url,
        type : 'post',
        data : {
            action : 'post_prototype',
            productid : prototypeProductID,
            link: linkPrototype, 
            project_link: window.location
        success : function() {
            window.location = linkPrototype;

    return false;

What am I missing?

1 Answer 1


The name prototype is already used by WordPress.

In wp-includes/script-loader.php, you'll find this line:

$scripts->add( 'prototype', 'https://ajax.googleapis.com/ajax/libs/prototype/', array(), '1.7.1');

Your file will be correctly enqueued if you change the script handle:

wp_enqueue_script( 'yourprefix_prototype', plugins_url( '/prototype.js', __FILE__ ), array('jquery'), '1.0', true );

You'll find the list of included JS scripts and their handles on the wp_enqueue_script() page.


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