Filter WordPress posts by multiple taxonomy terms with AJAX and pagination

filter-post-mt.js

$('.sc-ajax-filter-multi').on('click', 'a[data-filter], .pagination a', function(event) {
	if(event.preventDefault) { event.preventDefault(); }

	$this = $(this);

	/**
	 * Set filter active
	 */
	if ($this.data('filter')) {
		$page = 1;
		
		/**
		 * If all terms, then deactivate all other
		 */
		if ($this.data('term') === 'all-terms') {
			$this.closest('ul').find('.active').removeClass('active');
		}
		else {
			$('a[data-term="all-terms"]').parent('li').removeClass('active');
		}

		// Toggle current active
		$this.parent('li').toggleClass('active');
			
		/**
		 * Get All Active Terms
		 */
		$active = {};
		$terms  = $this.closest('ul').find('.active');

		if ($terms.length) {
			$.each($terms, function(index, term) {
				
				$a    = $(term).find('a');
				$tax  = $a.data('filter');
				$slug = $a.data('term');

				if ($tax in $active) {
					$active[$tax].push($slug);
				}
				else {
					$active[$tax]      = [];
					$active[$tax].push($slug);
				}						
			});
		}
		

	}
	else {
		/**
		 * Pagination
		 */
		$page = parseInt($this.attr('href').replace(/\D/g,''));
		$this = $('.nav-filter .active a');
	}
	

	$params    = {
		'page'  : $page,
		'terms' : $active,
		'qty'   : $this.closest('#container-async').data('paged'),
	};
	// Run query
	get_posts($params);
});