Add Hook: "script_loader_tag"

[ryanve]

There exists a filter for "style_loader_tag" in wp-includes/class.wp-styles.php. A corresponding filter "script_loader_tag" in wp-includes/class.wp-scripts.php would be very useful for customizing script loading.

[scribu]

Example use case?

[ryanve]

add_filter( 'script_loader_tag', function ( $html, $handle ) {
    if ( 'example' !== $handle )
        return $html;
    return str_replace( '<script ', '<script async ', $html );
}, 12, 2);

[ocean90]

Duplicate of #13592.

[ryanve]

@ocean90 There's no explanation in #13592 as to why "script_loader_tag" was not added.

[ryanve]

@scribu another potential use case is wrapping a script in IE conditionals (see #16024)

add_filter( 'script_loader_tag', function ( $html, $handle ) {
    return 'html5-shim' === $handle' ? <!--[if lt IE 9]>' . $html . '<![endif]-->' : $html;
}, 12, 2);