wp_script_is( string $handle, string $list = 'enqueued' )

Determines whether a script has been added to the queue.

Description Description

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

Parameters Parameters


(string) (Required) Name of the script.


(string) (Optional) Status of the script to check. Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.

Default value: 'enqueued'

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Return Return

(bool) Whether the script is queued.

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Source Source

File: wp-includes/functions.wp-scripts.php

function wp_script_is( $handle, $list = 'enqueued' ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	return (bool) wp_scripts()->query( $handle, $list );

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Changelog Changelog

Version Description
3.5.0 'enqueued' added as an alias of the 'queue' list.
2.8.0 Introduced.

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User Contributed Notes User Contributed Notes

  1. Skip to note 1 content
    Contributed by Codex

    Basic Example
    This would check if the script named ‘fluidVids.js’ is enqueued. If it is enqueued, it does nothing. If it is not enqueued, the files are then registered and enqueued.

    $handle = 'fluidVids.js';
    $list = 'enqueued';
    if (wp_script_is( $handle, $list )) {
    } else {
        wp_register_script( 'fluidVids.js', plugin_dir_url(__FILE__).'js/fluidvids.min.js');
        wp_enqueue_script( 'fluidVids.js' );

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