Assets

When it comes to enqueueing or registering assets, we are talking about JS & CSS files. There is 2 methods that you can use in init & onAdmin methods:

• addStyle
• addScript

addStyle

addstyle method is defined as so:

public function addStyle(
        string $handler,
        string $path,
        array $dep = [],
        bool $isAdmin = false,
        bool $enqueue = true,
        string $version = null
    ) {
        $this->styles[] = [
            'handler' => $handler,
            'path' => $path,
            'dep' => $dep,
            'is_admin' => $isAdmin,
            'enqueue' => $enqueue,
            'version' => $version
        ];
    }

You should use this method like so:

$this->addStyle();

addStyle Parameters

$handler parameter does not need any explanation because you already know.

for $path parameter you only need to pass file name of your css. Because it will automatically load it from assets folder that is defined in config folder.

For example if you create a CSS file named main.css in ./assets/css you only need to pass main.css as $path parameter. You can also create sub folders, for example you create a CSS file like so: ./assets/css/admin/listings/base.css. In this case your $path parameter will be admin/listing/base.css

$dep parameter does not need any explanation too.

$is_admin is deciding to register given style with which hook wp_enqueue_scripts or admin_enqueue_scripts.

If you pass true as $enqueue parameter (which it’s default value is true) it will enqueue style for you but if you pass false it will only register it for you and you use it’s handler as dep for other styles you will add.

$version parameter does not need any explanation because you already know.

addScript

addScript method is defined as so:

public function addScript(
        string $handler,
        string $path,
        array $dep = [],
        bool $isAdmin = false,
        bool $inFooter = false,
        bool $enqueue = true,
        string $version = null
    ) {
        $this->scripts[] = [
            'handler' => $handler,
            'path' => $path,
            'dep' => $dep,
            'enqueue' => $enqueue,
            'in_footer' => $inFooter,
            'is_admin' => $isAdmin,
            'version' => $version
        ];
    }

You should use this method like so:

$this->addScript();

addScript Parameters

There is only 1 difference from addStyle method: $in_footer parameter which decides to enqueue this script in footer or not.