diff --git a/jquery/jquery-tests.ts b/jquery/jquery-tests.ts
index 37cf5495e..cfd4ae56f 100644
--- a/jquery/jquery-tests.ts
+++ b/jquery/jquery-tests.ts
@@ -1183,7 +1183,6 @@ function test_delay() {
     });
 }
 
-/* Not existing, but not recommended either
 function test_delegate() {
     $("table").delegate("td", "click", function () {
         $(this).toggleClass("chosen");
@@ -1201,7 +1200,7 @@ function test_delegate() {
     $("body").delegate("a", "click", function (event) {
         event.preventDefault();
     });
-    $("body").delegate("p", "myCustomEvent", function (e, myName, myValue) {
+    $("body").delegate("p", "myCustomEvent", function (e, myName?, myValue?) {
         $(this).text("Hi there!");
         $("span").stop().css("opacity", 1)
                  .text("myName = " + myName)
@@ -1211,7 +1210,48 @@ function test_delegate() {
         $("p").trigger("myCustomEvent");
     });
 }
-*/
+
+function test_undelegate() {
+    function aClick() {
+        $("div").show().fadeOut("slow");
+    }
+    $("#bind").click(function () {
+        $("body")
+            .delegate("#theone", "click", aClick)
+            .find("#theone").text("Can Click!");
+    });
+    $("#unbind").click(function () {
+        $("body")
+            .undelegate("#theone", "click", aClick)
+            .find("#theone").text("Does nothing...");
+    });
+
+    $("p").undelegate();
+
+    $("p").undelegate("click");
+
+    var foo = function () {
+        // Code to handle some kind of event
+    };
+
+    // ... Now foo will be called when paragraphs are clicked ...
+    $("body").delegate("p", "click", foo);
+
+    // ... foo will no longer be called.
+    $("body").undelegate("p", "click", foo);
+
+    var foo = function () {
+        // Code to handle some kind of event
+    };
+
+    // Delegate events under the ".whatever" namespace
+    $("form").delegate(":button", "click.whatever", foo);
+
+    $("form").delegate("input[type='text'] ", "keypress.whatever", foo);
+
+    // Unbind all events delegated under the ".whatever" namespace
+    $("form").undelegate(".whatever");
+}
 
 function test_dequeue() {
     $("button").click(function () {
diff --git a/jquery/jquery.d.ts b/jquery/jquery.d.ts
index 76e5172f3..329e0a177 100644
--- a/jquery/jquery.d.ts
+++ b/jquery/jquery.d.ts
@@ -2634,9 +2634,30 @@ interface JQuery {
      */
     unbind(evt: any): JQuery;
 
+    /**
+     * Remove a handler from the event for all elements which match the current selector, based upon a specific set of root elements.
+     */
     undelegate(): JQuery;
-    undelegate(selector: any, eventType: string, handler?: (eventObject: JQueryEventObject) => any): JQuery;
-    undelegate(selector: any, events: any): JQuery;
+    /**
+     * Remove a handler from the event for all elements which match the current selector, based upon a specific set of root elements.
+     * 
+     * @param selector A selector which will be used to filter the event results.
+     * @param eventType A string containing a JavaScript event type, such as "click" or "keydown"
+     * @param handler A function to execute at the time the event is triggered.
+     */
+    undelegate(selector: string, eventType: string, handler?: (eventObject: JQueryEventObject) => any): JQuery;
+    /**
+     * Remove a handler from the event for all elements which match the current selector, based upon a specific set of root elements.
+     * 
+     * @param selector A selector which will be used to filter the event results.
+     * @param events An object of one or more event types and previously bound functions to unbind from them.
+     */
+    undelegate(selector: string, events: Object): JQuery;
+    /**
+     * Remove a handler from the event for all elements which match the current selector, based upon a specific set of root elements.
+     * 
+     * @param namespace A string containing a namespace to unbind all events from.
+     */
     undelegate(namespace: string): JQuery;
 
     unload(handler: (eventObject: JQueryEventObject) => any): JQuery;