diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 3fed96a2b..347857633 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -157,9 +157,11 @@ All definitions files include a header with the author and editors, so at some p
 * [jQuery.joyride](http://zurb.com/playground/jquery-joyride-feature-tour-plugin) (by [Vincent Bortone](https://github.com/vbortone))
 * [jQuery.jSignature](https://github.com/willowsystems/jSignature) (by [Patrick Magee](https://github.com/pjmagee))
 * [jQuery.noty](http://needim.github.io/noty/) (by [Aaron King](https://github.com/kingdango/))
-* [jQuery.pickadate](https://github.com/amsul/pickadate.js) (by [Theodore Brown](https://github.com/theodorejb))
 * [jQuery.payment](http://needim.github.io/noty/) (by [Eric J. Smith](https://github.com/ejsmith/))
+* [jQuery.pickadate](https://github.com/amsul/pickadate.js) (by [Theodore Brown](https://github.com/theodorejb))
+* [jQuery.pjax](https://github.com/defunkt/jquery-pjax) (by [Junle Li](https://github.com/lijunle))
 * [jQuery.pnotify](http://sciactive.github.io/pnotify/) (by [David Sichau](https://github.com/DavidSichau/))
+* [jQuery.postMessage](http://benalman.com/projects/jquery-postmessage-plugin/) (by [Junle Li](https://github.com/lijunle))
 * [jQuery.scrollTo](https://github.com/flesler/jquery.scrollTo) (by [Neil Stalker](https://github.com/nestalk/))
 * [jQuery.simplePagination](https://github.com/flaviusmatis/simplePagination.js) (by [Natan Vivo](https://github.com/nvivo/))
 * [jquery.superLink](http://james.padolsey.com/demos/plugins/jQuery/superLink/superlink.jquery.js) (by [Blake Niemyjski](https://github.com/niemyjski))
diff --git a/jquery.pjax/jquery.pjax-tests.ts b/jquery.pjax/jquery.pjax-tests.ts
new file mode 100644
index 000000000..214bb3922
--- /dev/null
+++ b/jquery.pjax/jquery.pjax-tests.ts
@@ -0,0 +1,60 @@
+/// <reference path="jquery.pjax.d.ts" />
+/// <reference path="../jquery/jquery.d.ts" />
+
+function test_fn_pjax() {
+    $(document).pjax("a");
+    $(document).pjax("a", "#pjax-container");
+    $(document).pjax("a", { push: true });
+    $(document).pjax("a", "#pjax-container", { push: true });
+}
+
+function test_pjax() {
+    $.pjax();
+    $.pjax({
+        url: "hello.html",
+        container: "#main"
+    });
+}
+
+function test_click() {
+    var event = $.Event("click");
+    $.pjax.click(event, "#pjax-container");
+    $.pjax.click(event, { container: "#pjax-container" });
+    $.pjax.click(event, "#pjax-container", { push: true });
+}
+
+function test_submit() {
+    var event = $.Event("submit");
+    $.pjax.submit(event, "#pjax-container");
+    $.pjax.submit(event, { container: "#pjax-container" });
+    $.pjax.submit(event, "#pjax-container", { push: true });
+}
+
+function test_enable() {
+    $.pjax.enable();
+}
+
+function test_disable() {
+    $.pjax.disable();
+}
+
+function test_reload() {
+    $.pjax.reload();
+}
+
+function test_defauluts() {
+    $.pjax.defaults = {
+        timeout: 650,
+        push: true,
+        replace: false,
+        type: 'GET',
+        dataType: 'html',
+        scrollTo: 0,
+        maxCacheLength: 20,
+        version: $.noop
+    };
+}
+
+function test_support() {
+    console.log($.support.pjax);
+}
diff --git a/jquery.pjax/jquery.pjax.d.ts b/jquery.pjax/jquery.pjax.d.ts
new file mode 100644
index 000000000..621d87d21
--- /dev/null
+++ b/jquery.pjax/jquery.pjax.d.ts
@@ -0,0 +1,142 @@
+// Type definitions for jquery-pjax
+// Project: https://github.com/defunkt/jquery-pjax
+// Definitions by: Junle Li <https://github.com/lijunle>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/// <reference path="../jquery/jquery.d.ts" />
+
+interface PjaxSettings extends JQueryAjaxSettings {
+    /**
+     * A jQuery selector indicates where to stick the response body. E.g., $(container).html(xhr.responseBody).
+     * If it is not defined, the `data-pjax` attribute of the link will be treated as container.
+     * If such an attribute is not defined too, the context will be treated as container.
+     */
+    container?: string;
+
+    /**
+     * Whether to pushState the URL. Defaults to true.
+     */
+    push?: boolean;
+
+    /**
+     * Whether to replaceState the URL. Defaults to false.
+     */
+    replace?: boolean;
+}
+
+interface JQuery {
+    /**
+     * Tell PJAX to listen links with delegation selector that, when click on them, fetches the href with ajax into the container.
+     * Tries to make sure the back button and ctrl+click work the way you'd expect.
+     * If `options.container` is not defined, the `data-pjax` attribute of the link will be treated as container.
+     * If such an attribute is not defined too, the context runs with this statement will be treated as container.
+     * @param delegationSelector The selector to limit which links PJAX should listen on.
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. E.g., $(container).html(xhr.responseBody).
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     * @return Returns the jQuery object
+     */
+    pjax(delegationSelector: string, options?: PjaxSettings): JQuery;
+
+    /**
+     * Tell PJAX to listen links with delegation selector that, when click on them, fetches the href with ajax into the container.
+     * Tries to make sure the back button and ctrl+click work the way you'd expect.
+     * If `options.container` is not defined, the `data-pjax` attribute of the link will be treated as container.
+     * If such an attribute is not defined too, the context runs with this statement will be treated as container.
+     * @param delegationSelector The selector to limit which links PJAX should listen on.
+     * @param containerSelector A jQuery selector indicates where to stick the response body. E.g., $(containerSelector).html(xhr.responseBody).
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. The `containerSelector` parameter has priority.
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     * @return Returns the jQuery object
+     */
+    pjax(delegationSelector: string, containerSelector?: string, options?: PjaxSettings): JQuery;
+}
+
+interface JQueryStatic {
+    pjax: PjaxStatic;
+}
+
+interface PjaxStatic {
+    /**
+     * PJAX default settings.
+     */
+    defaults: PjaxSettings;
+
+    /**
+     * Loads a URL with ajax, puts the response body inside a container, then pushState()'s the loaded URL.
+     * Works just like $.ajax in that it accepts a jQuery ajax settings object (with keys like url, type, data, etc).
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. E.g., $(container).html(xhr.responseBody).
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     */
+    (options?: PjaxSettings): JQueryXHR;
+
+    /**
+     * PJAX on click handler.
+     * @param event A jQuery click event.
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. E.g., $(container).html(xhr.responseBody).
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     */
+    click(event: JQueryEventObject, options?: PjaxSettings): void;
+
+    /**
+     * PJAX on click handler.
+     * @param event A jQuery click event.
+     * @param containerSelector A jQuery selector indicates where to stick the response body. E.g., $(containerSelector).html(xhr.responseBody).
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. The `containerSelector` parameter has priority.
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     */
+    click(event: JQueryEventObject, containerSelector?: string, options?: PjaxSettings): void;
+
+    /**
+     * PJAX on form submit handler
+     * @param event A jQuery click event.
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. E.g., $(container).html(xhr.responseBody).
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     */
+    submit(event: JQueryEventObject, options?: PjaxSettings): void;
+
+    /**
+     * PJAX on form submit handler
+     * @param event A jQuery click event.
+     * @param containerSelector A jQuery selector indicates where to stick the response body. E.g., $(containerSelector).html(xhr.responseBody).
+     * @param options PJAX settings, which is a superset of jQuery AJAX settings. It includes the following specific options:
+     * - container: a jQuery selector indicates where to stick the response body. The `containerSelector` parameter has priority.
+     * - push: a boolean indicates whether to pushState the URL. Default is true.
+     * - replace: a boolean indicates whether to use replaceState instead of pushState. Default is false.
+     */
+    submit(event: JQueryEventObject, containerSelector?: string, options?: PjaxSettings): void;
+
+    /**
+     * Install pjax functions on $.pjax to enable pushState behavior. Does nothing if already enabled.
+     */
+    enable(): void;
+
+    /**
+     * Disable pushState behavior.
+     * This is the case when a browser doesn't support pushState. It is sometimes useful to disable pushState for debugging on a modern browser.
+     */
+    disable(): void;
+
+    /**
+     * Reload current page with pjax.
+     */
+    reload(): JQueryXHR;
+}
+
+interface JQuerySupport {
+    /**
+     * A boolean value indicates if pjax is supported by the browser.
+     */
+    pjax: boolean;
+}