1 day expiration using jQuery codes

jQuery( document ).ready(function($){ 
	if ( document.cookie.indexOf( 'visited=true' ) == -1 ){
		var number_of_days = 1;  // 1 Day
		var total_of_days = 1000*60*60*24*number_of_days;
		var expiration = new Date(
			( new Date() ).valueOf() + total_of_days
		);
		document.cookie = "visited=true;expires=" + expiration.toUTCString();
	}
});