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WordPress Queue Scripts: What is the most effective method of placing your resources in queue with WordPress

Jun 30, 2022
wp_enqueue_scripts

In WordPress instead of just placing these headers into your site, it is recommended to make use of the enqueueing functionality since it's the most frequently used method to control the resources you own. Additionally, it has advantages when it comes to managing dependencies. Discover how through the scripts of wp_enqueue_scripts.

How Enqueueing Works

There are two main steps to put scripts in queue fashion. First, you must register the script, notifying WordPress that it's registered and then you add the script into the queue, before placing the script in the header tag or before closing the body tag.

The purpose behind having two steps is that it helps in the ability to adapt. Certain situations may require it. is important to let WordPress notify them of assets. You may find that you don't want to utilize this feature on all pages. In the case of an exclusive gallery shortcode, which utilizes Javascript the sole requirement is to load JS in the event it is employed however it is not required on every page.

Queuing Basics Using wp_enqueue_scripts

For enqueuing scripts and style at the front of the site You'll have utilize the scripts, wp_enqueue_scripts hook. Within the hooked function you can use the wp_register_script(), wp_enqueue_script(), wp_register_style() and wp_enqueue_style() functions.

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_register_style( 'custom-gallery', plugins_url( '/css/gallery.css' , __FILE__ ) ); wp_register_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ) ); wp_enqueue_style( 'custom-gallery' ); wp_enqueue_script( 'custom-gallery' );

In the earlier example, I registered and queued resources in the same application, which may be a bit redundant. It is possible to use the queue function to join and queue immediately, by using the same arguments you employ for the register.

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_enqueue_style( 'custom-gallery', plugins_url( '/css/gallery.css' , __FILE__ ) ); wp_enqueue_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ) ); 
add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_register_style( 'custom-gallery', plugins_url( '/css/gallery.css' , __FILE__ ) ); wp_register_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ) ); add_shortcode( 'custom_gallery', 'custom_gallery' ); function custom_gallery( $atts ) wp_enqueue_style( 'custom-gallery' ); wp_enqueue_script( 'custom-gallery' ); // Gallery code here

Dependency Management

WordPress is a platform running on the internet and includes built-in controls for dependency making an use of the third argument both that of WordPress registration formats() and the script wp_register_script() functions. In addition, you are allowed to utilize the functions that allow you to wait for now to wait until you do not separate these two functions.

The last parameter provides an inventory of registered styles and scripts to load before the asset is queued. In the example, it will likely be built on JQuery. This is what we'll take as:

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_enqueue_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ), array( 'jquery' ) );

There is no need to register or enqueue JQuery from scratch since JQuery is already a part of WordPress. You'll be able to locate the entire list of themes and scripts which are supported by WordPress at the Codex.

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If you've dependencies on your own, then you'll need to include them in the procedure or else your scripts will not run. Here's an illustration.

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_enqueue_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ), array( 'jquery' ) ); wp_enqueue_script( 'custom-gallery-lightbox', plugins_url( '/js/gallery-lightbox.js' , __FILE__ ), array( 'custom-gallery' ) );

Let's assume that the first script contains a gallery. It's an add-on to the script which allows images to display within the lightbox that is open. Note that, even though the script we've created relies on jQuery, there's no a need to mention this dependency as our initial script was already loaded by the jQuery. That said, it may be beneficial to specify every dependency so that you can be sure you don't have any problems in the event that you do not make the required changes.

WordPress knows about the required scripts and decides on the order they will require to be added to the page.

Queuing systems can be a fantastic way for adding scripts to the footer with five parameters (the fourth parameter is used to add the code). This scenario would incorporate scripts inside the footer, in the event that we change the look of the footer. It's subtile.

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_enqueue_script( 'custom-gallery', plugins_url( '/js/gallery.js' , __FILE__ ), array( 'jquery' ), '1.0', true ); wp_enqueue_script( 'custom-gallery-lightbox', plugins_url( '/js/gallery-lightbox.js' , __FILE__ ), array( 'custom-gallery', 'jquery' ), '1.0', true );

If you specify that the parameter is true, it will then put scripts into the footer. If you use false or by removing the parameter it will put things inside the header. Like I said before in the event that it's possible that you can, make sure to add scripts within the footer.

The art of specifying the media for design

Utilizing the function of the style register/enqueue, that has five variables, you will be able determine the type of media this script was developed to work with (print or screen and handheld devices.). This feature allows users to limit their use of the style script to certain types of media, making it a powerful technique for optimizing your workflow.

add_action( 'wp_enqueue_scripts', 'my_plugin_assets' ); function my_plugin_assets() wp_register_style( 'custom-gallery-print', plugins_url( '/css/gallery.css' , __FILE__ ), array(), '1.0', 'print' );

To find a thorough description of every type of media which can be utilized to build a site go through the CSS guidelines.

Summary

Queuing assets is a reliable way to manage this kind of asset. This gives the user along with theme developers and plugins an improved control over the platform since it's capable of remove the burden of dependability off of your shoulders.

As if that wasn't enough the process is the process of integrating your content, numerous theme marketplaces and WordPress repository are not going to be happy with your efforts if you don't utilize this method.

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