Vantage Smooth scroll.js

/* ========== Smooth Scroll ========== */
(
	function ( $ ) {
	$.fn.vantageSmoothScroll = function () {
		$( this ).click( function ( e ) {
			var $a = $( this );
			var $target = $( '[name=' + this.hash.slice( 1 ) + ']' ).length ? $( '[name=' + this.hash.slice( 1 ) + ']' ) : $( $a.get( 0 ).hash );

			if ( $target.length ) {

				var height = 0;
				if ( $( '.site-navigation' ).hasClass( 'use-sticky-menu' ) ) {
					height += $( '.site-navigation' ).outerHeight();
				}
				if ( $( 'body' ).hasClass( 'admin-bar' ) ) {
					height += $( '#wpadminbar' ).outerHeight();
				}

				$( 'html, body' ).animate( {
					scrollTop: $target.offset().top - height
				}, 1000 );

				return false;
			}
			// Scroll to the position of the item, minus the header size
		} );
	}
}
)( jQuery );

( function($) {
	$(window).load( function() {
		// Handle smooth scrolling
		$( '#site-navigation a[href*="#"]:not([href="#"])' ).add( 'a[href*="#"]:not([href="#"])' ).not( '.lsow-tab a[href*="#"]:not([href="#"]), .wc-tabs a[href*="#"]:not([href="#"]), .iw-so-tab-title a[href*="#"]:not([href="#"]), .comment-navigation a[href*="#"]' ).vantageSmoothScroll();

	} );
} )(jQuery);

Hello,
Thanks for this code but how to smooth scroll when page loaded please.
Thank you.