Modify script tag in WordPress to load scripts in async mood or defer mood

wp-async-script-loader.php

<?php
/**
 * Add async boolean attribute to script tag
 * @param  string $tag Default script tag
 * @return string      Modified script tag
 */
function omm_add_async_loading( $tag ) {
   return str_replace( '<script', '<script async', $tag );
}
add_filter( 'script_loader_tag', 'omm_add_async_loading' );

wp-defer-script-loader.php

<?php
/**
 * Add defer boolean attribute to script tag
 * @param  string $tag Default script tag
 * @return string      Modified script tag
 */
function omm_add_defer_loading( $tag ) {
   return str_replace( '<script', '<script defer', $tag );
}
add_filter( 'script_loader_tag', 'omm_add_defer_loading' );

Worked perfectly. Thank you.