search tags javascript fixes

verse/static/js/dropdown.js

@@ -60,18 +60,21 @@ let timeout = null;
 searchInput.addEventListener('keyup', function (e) {
     // Clear the timeout if it has already been set.
     clearTimeout(timeout);
-
     // Make a new timeout set to go off in 1000ms (1 second)
     timeout = setTimeout(function () {
         console.log('Input Value:', searchInput.value);
-				searchTags(searchInput.value);
+				if (searchInput.value.length > 2) {
+					searchTags(searchInput.value);
+				} else {
+					clearSearchTags();
+				}
     }, 1000);
 });
 
 function searchTags(searchInput) {
-	var tag_ele = document.getElementsByClassName('tags');
+	let tag_ele = document.getElementsByClassName('tags');
 	for (var i = 0; i < tag_ele.length; ++i) {
-		  let searchText = searchInput.toLowerCase();
+		  let searchText = searchInput.toLowerCase().trim();
 			let tagtext = tag_ele[i].innerText.toLowerCase();
 			if(searchText.includes(tagtext) || tagtext.includes(searchText)) {
 				addClass(tag_ele[i], "searched");
@@ -81,3 +84,10 @@ function searchTags(searchInput) {
 			}
 	}
 }
+
+function clearSearchTags() {
+	let tag_ele = document.getElementsByClassName('tags');
+	for (var i = 0; i < tag_ele.length; ++i) {
+		removeClass(tag_ele[i], "searched");
+	}
+}