How to echo script with conditional logic like styles ?

Hello,

I’v been looking for how to echo script with condotonal logic like styles do.

So i made my own solution and i’m posting it here for everyone else who need these

first you shoud add these function:

/**
 * Adding extra data to scripts
**/
if( ! function_exists( 'wp_script_add_data' ) ) :

function wp_script_add_data( $handle, $key, $value ) {
	global $wp_scripts;
	return $wp_scripts->add_data( $handle, $key, $value );
}

endif; // ! function_exists( 'wp_script_add_data' )

seccond you need to add filter :

add_filter( 'script_loader_tag', function( $tag, $handle ) {
	global $wp_scripts;
	if( isset( $wp_scripts->registered[$handle]->extra['conditional'] ) && $wp_scripts->registered[$handle]->extra['conditional'] ) {
		$tag = "<!--[if {$wp_scripts->registered[$handle]->extra['conditional']}]>\n" . $tag . "<![endif]-->\n";
	}
	return $tag;
}, 10, 2 );

and last one, in wp_enqueue_scripts action you should enqueue your script like these:

wp_register_script( 'respond', 'https://cdnjs.cloudflare.com/ajax/libs/respond.js/1.4.2/respond.min.js', array(), '1.4.2' );
wp_script_add_data( 'respond', 'conditional', 'lt IE 9' );
wp_enqueue_script( 'respond' );

and in html youl have:

<!--[if lt IE 9]>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/respond.js/1.4.2/respond.min.js?ver=1.4.2'></script>
<![endif]-->

That’s it )
Good luck to all