diff --git a/examples/grab.js b/examples/grab.js
index 52b2a66546..3a9ce9921d 100644
--- a/examples/grab.js
+++ b/examples/grab.js
@@ -14,14 +14,6 @@ var MAX_SOLID_ANGLE = 0.01; // objects that appear smaller than this can't be gr
 var ZERO_VEC3 = {x: 0, y: 0, z: 0};
 var IDENTITY_QUAT = {x: 0, y: 0, z: 0, w: 0};
 
-
-if (typeof String.prototype.startsWith != 'function') {
-  // see below for better implementation!
-  String.prototype.startsWith = function (str){
-    return this.indexOf(str) === 0;
-  };
-}
-
 function getTag() {
     return "grab-" + MyAvatar.sessionUUID;
 }
diff --git a/examples/libraries/utils.js b/examples/libraries/utils.js
index f6f635c73a..2ee9bdd5fb 100644
--- a/examples/libraries/utils.js
+++ b/examples/libraries/utils.js
@@ -179,3 +179,9 @@ pointInExtents = function(point, minPoint, maxPoint) {
            (point.y >= minPoint.y && point.y <= maxPoint.y) &&
            (point.z >= minPoint.z && point.z <= maxPoint.z);
 }
+
+if (typeof String.prototype.startsWith != 'function') {
+  String.prototype.startsWith = function (str){
+    return this.slice(0, str.length) == str;
+  };
+}