Fix: () => { } -> function() { }

src/game/typing/practice/game.js

@@ -15,7 +15,7 @@ class TypingPractice {
 
 		// top ui
 		let screenTopUI = new ScreenTopUI();
-		screenTopUI.makeBackButton( () => {
+		screenTopUI.makeBackButton( function() {
 			sessionStorageManager.resetPlayingAppData();
 			location.href = '../../web/client/menu_typing_practice.html';
 		});
@@ -29,12 +29,12 @@ class TypingPractice {
 
 		this.typingScore = new TypingScore();
 
-		this.stageTimer = new StageTimer( TypingPractice.STAGE_TIMER_SEC, () => {
+		this.stageTimer = new StageTimer( TypingPractice.STAGE_TIMER_SEC, (function() {
 			self.isOnStage = false;
 
 			// self.goResult();
 			self.gameOver();
-		});
+		}));
 
 
 		// typing content
@@ -88,12 +88,12 @@ class TypingPractice {
 		else
 			this.keyboard = new Keyboard(this.keyMapper, Keyboard.ENGLISH);
 
-		game.input.keyboard.processKeyPress = () => {
+		game.input.keyboard.processKeyPress = (function() {
 			if(self.isOnStage === false)
 				return;
 
 			self.checkTypingContents(event);
-		}
+		});
 		this.shiftKey = game.input.keyboard.addKey(Phaser.Keyboard.SHIFT);
 
 		// hands

src/game/typing/test/game.js

@@ -13,7 +13,7 @@ class TypingTest {
 
 		// top ui
 		let screenTopUI = new ScreenTopUI();
-		screenTopUI.makeBackButton( () => {
+		screenTopUI.makeBackButton( function() {
 			sessionStorageManager.resetPlayingAppData();
 			location.href = '../../web/client/menu_typing_test.html';
 		});