Adding trim function check for IE8 support

app/js/timer.js

@@ -12,6 +12,14 @@ angular.module('timer', [])
       },
       controller: ['$scope', '$element', '$attrs', '$timeout', function ($scope, $element, $attrs, $timeout) {
 
+        // Checking for trim function since IE8 doesn't have it
+        // If not a function, create tirm with RegEx to mimic native trim
+        if(typeof String.prototype.trim !== 'function') {
+          String.prototype.trim = function() {
+            return this.replace(/^\s+|\s+$/g, '');
+          }
+        }
+
         //angular 1.2 doesn't support attributes ending in "-start", so we're
         //supporting both "autostart" and "auto-start" as a solution for
         //backward and forward compatibility.