Add: ESC key back(), Enter key start/restart to all features

src/game/typing/test/game.js

@@ -13,12 +13,18 @@ var TypingTest = {
 
 		game.stage.backgroundColor = '#4d4d4d';
 
+		// keyboard shortcut
+		this.keyboardShortcut = new KeyboardShortcut();
+		this.keyboardShortcut.addCallback(
+			Phaser.KeyCode.ESC,	// keyCode
+			null,	// keyDownHandler
+			(function() { this.back(); }).bind(this),	// keyUpHandler
+			"keyboard_test"	// callerClassName
+		);
+
 		// top ui
 		var screenTopUI = new ScreenTopUI();
-		screenTopUI.makeBackButton( function() {
-			sessionStorageManager.resetPlayingAppData();
-			location.href = '../../web/client/menu_typing_test.html';
-		});
+		screenTopUI.makeBackButton( (function() { this.back(); }).bind(this) );
 		screenTopUI.makeFullScreenButton();
 
 
@@ -144,6 +150,12 @@ var TypingTest = {
 	}
 	*/
 
+
+	back: function() {
+		sessionStorageManager.resetPlayingAppData();
+		location.href = '../../web/client/menu_typing_test.html';
+	},
+
 	startGame: function() {
 		this.averageTypingSpeedText.print(0);
 
@@ -311,7 +323,7 @@ var TypingTest = {
 		this.inputTextContent.canvasInput.value('');
 	},
 
-	checkTypingContents: function(evnet) {
+	checkTypingContents: function(event) {
 		if(event.keyCode == Phaser.Keyboard.ENTER) {
 			// console.log("### enter ###");
 			var inputContent = this.inputTextContent.canvasInput.value();