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app/scripts/app.js

@@ -14,6 +14,28 @@ define([
 
   var App = function () {
     this.initialize = function () {
+      if (!Function.prototype.bind) {
+        Function.prototype.bind = function (oThis) {
+          if (typeof this !== 'function') {
+            // closest thing possible to the ECMAScript 5 internal IsCallable function
+            throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
+          }
+
+          var aArgs = Array.prototype.slice.call(arguments, 1),
+              fToBind = this,
+              FNOP = function () {},
+              fBound = function () {
+                return fToBind.apply(this instanceof FNOP && oThis ? this : oThis,
+                                     aArgs.concat(Array.prototype.slice.call(arguments)));
+              };
+
+          FNOP.prototype = this.prototype;
+          fBound.prototype = new FNOP();
+
+          return fBound;
+        };
+      }
+
       this.route = new Route();
 
       this.legInput = new LegInput({collection: this.route});