Updates to content-az.php and js/cs.js. Added a search field that fil…

…ters the list in the A-Z index.

content-az.php

@@ -69,7 +69,9 @@ $pattern = '#[A-Za-z|~`!@\#$%^&*()_+=|\\}\][{\'/;\-":?>.<]#';
 				}
 			}
 			echo '</nav>';
-
+			?>
+			<input id="azFilterInput" type="text" class="form-control" aria-label=“search site a-z” placeholder="Type here to filter this list" />
+			<?php
 			// Generate AZ List
 			//if( !preg_match($pattern, $exclude, $matches) ){
 				$letters = array();

js/cs.js

@@ -269,7 +269,41 @@ function squareImg(img){
 
 };
 
+/*
+	Filter Functionality for the A-Z Index
+	
+	The function will hide any text that does not match the filter input and remove letters
+	if there are no matches for that letter.
+*/
+	var filterEvent = null;
+
+	$("#azFilterInput").keyup(function(){
+		azFilter();
+	});
+
+	function azFilter(){
+		var filterInput = $("#azFilterInput").val();
+
+		// Show everything that could have been hidden
+		$(".az-letter:hidden, .az-letter-list li:hidden").each(function(){
+			$(this).show();
+		});
+
+		if(filterInput !== ""){
+			// Select any az-letter-page class where the text does not match the regular expression
+			$("a.az-letter-page").filter( function(i){ return $(this).html().match(new RegExp(filterInput, "i")) === null }).each(function(){
+				$(this).parent("li").hide();
+				var numberOfVisibleListItems = $(this).parents(".az-letter-list").children("li:visible").length;
+
+				// If there are no visible list items for a letter than we will hide the whole div
+				if(numberOfVisibleListItems === 0){
+					$(this).parents(".az-letter").hide();
+				}
+			});
+		}
+	}
 
+/* ========================================= */
 
 $(document).ready(function(){
 	stickyFoot();
@@ -301,4 +335,4 @@ $(document).ready(function() {
     $('#uc-header .container').fadeIn('slow'); 
 });
 
-})
+});