guess my number Game was added

secret/guessMyNumber/game.js

@@ -0,0 +1,54 @@
+'use strict';
+
+const targetNum = Math.trunc(Math.random() * 20) + 1;
+let highScore = Number(localStorage.getItem('highscore')) || 0;
+let userGuess = 10;  // Default guess
+let currScore = 20;
+
+const screenEl = document.querySelector('.screen');
+const msgEl = document.querySelector('.message');
+const guessInput = document.querySelector('#guess');
+const scoreEl = document.querySelector('.score');
+const highScoreEl = document.querySelector('.highScore');
+const checkBtn = document.querySelector('#check');
+const restartBtn = document.querySelector('#restart');
+const incBtn = document.querySelector('#up');
+const decBtn = document.querySelector('#down');
+
+const setMsg = msg => msgEl.textContent = msg;
+const setScore = score => scoreEl.textContent = `Score: ${currScore = score}`;
+const setHighScore = () => {
+    highScoreEl.textContent = `Highscore: ${highScore}`;
+    localStorage.setItem('highscore', highScore);
+};
+const changeColor = color => screenEl.style.backgroundColor = color;
+
+checkBtn.addEventListener('click', () => {
+    userGuess = Number(guessInput.textContent);
+    if (!userGuess || userGuess < 1 || userGuess > 20) {
+        setMsg("Please enter a valid number between 1 and 20.");
+    } else if (userGuess === targetNum) {
+        highScore = Math.max(highScore, currScore);
+        setHighScore();
+        setMsg(currScore !== 20 ? 'Correct Number!' : 'Are you sure you didn\'t cheat?');
+        changeColor(currScore !== 20 ? '#1ba100' : '#FFC300');
+    } else {
+        setMsg(userGuess > targetNum ? 'Too High!' : 'Too Low!');
+        if (currScore > 1) {
+            setScore(currScore - 1);
+        } else {
+            setScore(1);
+            setMsg("You lost the game!");
+            changeColor('#a10000');
+        }
+    }
+});
+
+restartBtn.addEventListener('click', () => location.reload());
+incBtn.addEventListener('click', () => guessInput.textContent = Math.min(Number(guessInput.textContent) + 1, 20));
+decBtn.addEventListener('click', () => guessInput.textContent = Math.max(Number(guessInput.textContent) - 1, 1));
+
+guessInput.textContent = userGuess;
+setMsg('Guess a number');
+setScore(currScore);
+setHighScore();