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@dotZak
Last active October 4, 2016 07:58
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wp_enqueue_script() filters
<?php
/**
* Functions used be the WordPress theme.
*/
if ( ! function_exists( 'get_google_maps_src' ) ) :
/**
* Take a Google Maps API v3 key (and optional callback) and return value for the 'src' attribute to load the api script.
* To be used for getting the wp_enqueue_script() URI parameter.
*
// Sample Implementation
// wp_enqueue_script( 'map_page_scripts', get_google_maps_src( 'AIzaSyCvqaM_Z5_s3BsCYcm268IBzR62JoiW3ko', 'initGoogleMaps' ), array(), false, true );
*
* @param string $key A Google Maps API v3 key generated for this site.
* @param string $callback A JavaScript function name for the Google Maps API to call back to initialize the maps on the page.
* @return string An escaped URL for use by a wp_enqueue_script() function.
*/
function get_google_maps_src( $key = '', $callback = '' )
{
if ( ! isset( $key ) )
return;
$callback = ( isset( $callback ) ) ? '&callback=' . $callback : '';
return esc_url_raw( sprintf( 'https://maps.googleapis.com/maps/api/js?key=%1$s%2$s', $key, $callback ) );;
}
endif;
if ( ! function_exists( 'add_async_attribute' ) ) :
/**
* Add 'async' and 'defer' attributs to the html 'script' tag.
*
* @param string $tag The raw html $tag as it is received.
* @param string $handle The $handle of the current script, e.g. 'rushhour_map_page_scripts'
* @return string A string which has conditionally had 'async' and 'defer' attributes added to it.
*/
function add_async_attribute( $tag, $handle )
{
$async_scripts = array( 'map_page_scripts' );
if ( ! in_array( $handle, $async_scripts ) )
return $tag;
return str_replace( ' src', ' async defer src', $tag );
}
endif;
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