Defer Parsing of Java script in WP

This is generally useful in speed optimisations and can help a lot to reduce load time of pages specially when your site depend heavily on javascripts.

/*Defer parsing js*/

if ( ! is_admin() ) {

function defer_parsing_of_js ( $url ) {

    if ( FALSE === strpos( $url, '.js' ) ) return $url;

    if ( strpos( $url, 'jquery.js' ) ) return $url;

    return "$url' defer='defer";

}

add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );

}

/*End Defer parsing js*/