if( ! function_exists( 'videotube_filter_the_read_more_js' ) ){
    /**
     *
     * Filter the read more JS
     *
     * @param array $args
     * @return array
     */
    function videotube_filter_the_read_more_js( $args ) {

        $args['moreLink'] = sprintf(
            '<a class="read-more-js" href="#">%s <i class="fa fa-angle-double-down" aria-hidden="true"></i></a>',
            esc_html__( 'Read more', 'mars' )
        );

        $args['lessLink'] = sprintf(
            '<a class="read-less-js" href="#">%s <i class="fa fa-angle-double-up" aria-hidden="true"></i></a>',
            esc_html__( 'Read less', 'mars' )
        );

        return $args;
    }
    add_filter( 'read_more_js' , 'videotube_filter_the_read_more_js', 10, 1 );
}