diff --git a/package.json b/package.json
index b7fac64..1ad86e3 100644
--- a/package.json
+++ b/package.json
@@ -22,4 +22,4 @@
         "object-hash": "^3.0.0",
         "tslib": "^2.4.1"
     }
-}
\ No newline at end of file
+}
diff --git a/src/Front/Library/Crazyurl.ts b/src/Front/Library/Crazyurl.ts
index cc71864..793ac4d 100644
--- a/src/Front/Library/Crazyurl.ts
+++ b/src/Front/Library/Crazyurl.ts
@@ -191,4 +191,36 @@ export default class Crazyurl{
 
     }
 
+    /**
+     * To Query String
+     * 
+     * Convert multidimensional object to query string
+     * 
+     * @source https://stackoverflow.com/questions/26084733/convert-multidimensional-object-to-query-string
+     * @param obj 
+     * @param prefix 
+     * @returns {string}
+     */
+    public static toQueryString = (obj:object, prefix:string = ""):string => {
+
+        var str = [], k, v;
+        for(var p in obj) {
+            if (!obj.hasOwnProperty(p)) {continue;} // skip things from the prototype
+            if (~p.indexOf('[')) {
+                k = prefix ? prefix + "[" + p.substring(0, p.indexOf('[')) + "]" + p.substring(p.indexOf('[')) : p;
+            // only put whatever is before the bracket into new brackets; append the rest
+            } else {
+                k = prefix ? prefix + "[" + p + "]" : p;
+            }
+            v = obj[p];
+            // @ts-ignore
+            str.push(typeof v == "object" ?
+              Crazyurl.toQueryString(v, k) :
+              encodeURI(k) + "=" + encodeURIComponent(v)
+            );
+        }
+        return str.join("&");
+
+    }
+
 }
\ No newline at end of file
diff --git a/src/Front/Library/Navigator/Client.ts b/src/Front/Library/Navigator/Client.ts
new file mode 100644
index 0000000..7d27a68
--- /dev/null
+++ b/src/Front/Library/Navigator/Client.ts
@@ -0,0 +1,133 @@
+/**
+ * Navigator
+ *
+ * Front TS Scrips for multiple tasks
+ *
+ * @package    kzarshenas/crazyphp
+ * @author     kekefreedog <kevin.zarshenas@gmail.com>
+ * @copyright  2022-2023 Kévin Zarshenas
+ */
+
+/**
+ * Dependances
+ */
+
+/**
+ * Client
+ *
+ * Methods for manage client navigator
+ *
+ * @package    kzarshenas/crazyphp
+ * @author     kekefreedog <kevin.zarshenas@gmail.com>
+ * @copyright  2022-2023 Kévin Zarshenas
+ */
+export default class Client {
+
+    /** Private parameters
+     ******************************************************
+     */
+
+    /** @var message:string */
+    private _closeMessage:string = 'Are you sure you want to leave ?';
+
+    /** @var _customCloseMessage:string */
+    private _customCloseMessage:string;
+
+    /** Public parameters
+     ******************************************************
+     */
+
+    /** @var isActive Check if event close is active */
+    public isPreventCloseActive = false;
+
+
+    /** Public methods
+     ******************************************************
+     */
+
+    /**
+     * Prevent Close
+     * 
+     * @param message
+     * @returns {void}
+     */
+    public preventClose = (message:string = "") => {
+
+        // Set message
+        this._customCloseMessage = message ? message : this._closeMessage;
+
+        // Add event listener
+        window.addEventListener("beforeunload", this._beforeUnloadEvent);
+
+        // Switch status
+        this.isPreventCloseActive = true;
+
+    }
+
+    /**
+     * Desable Close
+     * 
+     * @param message
+     * @returns {void}
+     */
+    public disablePreventClose = () => {
+
+        // Add event listener
+        window.removeEventListener("beforeunload", this._beforeUnloadEvent);
+
+        // Switch status
+        this.isPreventCloseActive = false;
+
+    }
+
+    /** Private methods
+     ******************************************************
+     */
+
+    /**
+     * Before Unload Event
+     * 
+     * @param event
+     * @returns {void}
+     */
+    private _beforeUnloadEvent = (event:Event):void => {
+
+        // Prevent default
+        event.preventDefault();
+
+        // 
+        // @ts-ignore
+        event.returnValue = `Are you sure you want to leave?`;
+
+        /* // check if event dialog
+        if(
+            "dialog" in event && 
+            typeof event.dialog === "object" && 
+            event.dialog &&
+            "setMessage" in event.dialog && 
+            typeof event.dialog.setMessage === "function" && 
+            event.dialog.setMessage &&
+            "setButtonLabel" in event.dialog && 
+            typeof event.dialog.setButtonLabel === "function" && 
+            event.dialog.setButtonLabel
+        ){
+
+            // Set message
+            event.dialog.setMessage(this._customCloseMessage);
+
+            // Set button
+            event.dialog.setButtonLabel("Save");
+
+            // Check show
+            if("show" in event.dialog && typeof event.dialog.show === "function")
+
+                // Show dialog
+                event.dialog.show().then(async (result) => {
+                    if (result == "Save"){
+                        // save the document.
+                    }
+                });
+        } */
+    }
+
+}
\ No newline at end of file
diff --git a/src/Front/Library/Utility/Runner.ts b/src/Front/Library/Utility/Runner.ts
index b29c702..6ce4311 100644
--- a/src/Front/Library/Utility/Runner.ts
+++ b/src/Front/Library/Utility/Runner.ts
@@ -11,6 +11,7 @@
 /**
  * Dependances
  */
+import {default as NavigatorClient} from "./../Navigator/Client";
 import {default as UtilityProcess} from "./Process";
 
 /**
@@ -61,6 +62,9 @@ export default class Runner {
     /** @param _options */
     private _options:RunnerOption;
 
+    /** @param _navigatorClient */
+    private _navigatorClient:NavigatorClient;
+
     /** Public methods
      ******************************************************
      */
@@ -83,6 +87,9 @@ export default class Runner {
         // Chain the methods in sequence using Promises
         let chain = Promise.resolve(options);
 
+        // New navigator client
+        this._navigatorClient = new NavigatorClient();
+
         // Initial setup before any methods
         chain = chain.then(
             options => {
@@ -105,6 +112,9 @@ export default class Runner {
                         label: UtilityProcess.capitalize(UtilityProcess.spaceBeforeCapital(method))
                     });
 
+                // Start prevent close
+                this._navigatorClient.preventClose();
+
                 // Return "abstract" class
                 return this.setUpBeforeClass(options);
 
@@ -115,13 +125,32 @@ export default class Runner {
         runMethods.forEach(method => {
             chain = chain
                 .then(options => {
+
+                    // Increment current
                     options._info.run.current++;
+
+                    // Set in progress
                     if(options._info.run.current>0)
                         options._info.status = "In Progress";
+
+                    // Run setup
                     return this.setUpBeforeMethod(options)
                 })
                 .then(this[method])
-                .then(this.tearDownAfterMethod);
+                .then(
+                    options => {
+
+                        // Return last method
+                        let result = this.tearDownAfterMethod(options);
+
+                        // Close prevent close
+                        this._navigatorClient.disablePreventClose();
+
+                        // Return result
+                        return result;
+
+                    }
+                );
         });
 
         // Final teardown after all methods
diff --git a/src/Front/Types/index.d.ts b/src/Front/Types/index.d.ts
index d531292..a259a6b 100644
--- a/src/Front/Types/index.d.ts
+++ b/src/Front/Types/index.d.ts
@@ -15,6 +15,7 @@ import Crazypage from "./../Library/Crazypage";
  * Dependances
  */
 export {default as Componentregister} from "./../Library/Componentregister";
+export {default as NavigatorClient} from "./../Library/Navigator/Client";
 export {default as ColorSchema} from "./../Library/Utility/ColorSchema";
 export {default as UtilityProcess} from "./../Library/Utility/Process";
 export {default as Crazycomponent} from "./../Library/Crazycomponent";
diff --git a/src/Front/index.ts b/src/Front/index.ts
index 1bb2eb1..a624568 100644
--- a/src/Front/index.ts
+++ b/src/Front/index.ts
@@ -12,6 +12,7 @@
  * Dependances
  */
 export {default as Componentregister} from "./Library/Componentregister";
+export {default as NavigatorClient} from "./Library/Navigator/Client";
 export {default as ColorSchema} from "./Library/Utility/ColorSchema";
 export {default as UtilityProcess} from "./Library/Utility/Process";
 export {default as Crazycomponent} from "./Library/Crazycomponent";
diff --git a/src/Library/Template/Handlebars.php b/src/Library/Template/Handlebars.php
index 0209a39..4b14cc7 100644
--- a/src/Library/Template/Handlebars.php
+++ b/src/Library/Template/Handlebars.php
@@ -17,11 +17,11 @@
  */
 use CrazyPHP\Library\Template\Handlebars\Helpers;
 use CrazyPHP\Exception\CrazyException;
+use Symfony\Component\Finder\Finder;
 use CrazyPHP\Library\Form\Process;
 use CrazyPHP\Library\Cache\Cache;
 use CrazyPHP\Library\File\File;
 use LightnCandy\LightnCandy;
-use Symfony\Component\Finder\Finder;
 
 /**
  * Handlebars
diff --git a/tests/Library/File/HeaderTest.php b/tests/Library/File/HeaderTest.php
index 07eaf91..ccb23d1 100644
--- a/tests/Library/File/HeaderTest.php
+++ b/tests/Library/File/HeaderTest.php
@@ -129,7 +129,7 @@ public function testHeaderPhp():void {
         $headerPhp = Header::get("php");
 
         # Check result is equal to header generated
-        $this->assertEquals(html_entity_decode($headerPhp), self::RESULT);
+        $this->assertEquals(html_entity_decode($headerPhp), str_replace("2023", date("Y"), self::RESULT));
             
         # Remove cache folder
         $this->cache->deleteMultiple(["test-string", "test-array", "test-template"]);