By Vijay Pancholi | Simple Game Based on HTML CSS JQUERY Based - Catch the Square

by Vijay Pancholi

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Catch the Square Game</title>
</head>
<body>
  <h1>🎯 Catch the Square!</h1>
  <div id="score">Score: 0</div>
  <div id="timer">Time Left: 30s</div>
  <button id="start-btn">Start Game</button>
  <div id="game-box">
    <div class="square" id="square"></div>
  </div>
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</body>
</html>

CSS

body {
      font-family: Arial, sans-serif;
      text-align: center;
      background: #f4f4f4;
    }

    #game-box {
      width: 400px;
      height: 400px;
      border: 4px solid #333;
      margin: 40px auto;
      position: relative;
      background-color: #fff;
    }

    .square {
      width: 50px;
      height: 50px;
      background-color: crimson;
      position: absolute;
      display: none;
      cursor: pointer;
      border-radius: 5px;
    }

    #score, #timer {
      font-size: 24px;
      margin: 10px;
    }

    #start-btn {
      padding: 10px 20px;
      font-size: 18px;
      background-color: teal;
      color: white;
      border: none;
      cursor: pointer;
    }

    #start-btn:hover {
      background-color: darkcyan;
    }

JavaScript

let score = 0;
    let timeLeft = 30;
    let timerInterval;
    let moveInterval;

    function randomPosition() {
      let box = $("#game-box");
      let square = $("#square");
      let maxX = box.width() - square.width();
      let maxY = box.height() - square.height();
      let randX = Math.floor(Math.random() * maxX);
      let randY = Math.floor(Math.random() * maxY);
      square.css({ top: randY + "px", left: randX + "px" });
    }

    function startGame() {
      score = 0;
      timeLeft = 30;
      $("#score").text("Score: " + score);
      $("#timer").text("Time Left: " + timeLeft + "s");
      $("#start-btn").hide();

      moveSquare();

      timerInterval = setInterval(() => {
        timeLeft--;
        $("#timer").text("Time Left: " + timeLeft + "s");
        if (timeLeft <= 0) {
          endGame();
        }
      }, 1000);
    }

    function moveSquare() {
      moveInterval = setInterval(() => {
        $("#square").fadeOut(100, () => {
          randomPosition();
          $("#square").fadeIn(100);
        });
      }, 1000);
    }

    function endGame() {
      clearInterval(timerInterval);
      clearInterval(moveInterval);
      $("#square").hide();
      $("#start-btn").show().text("Play Again");
      alert("Game Over! Your final score is: " + score);
    }

    $(document).ready(function () {
      $("#start-btn").click(startGame);

      $("#square").click(function () {
        score++;
        $("#score").text("Score: " + score);
        $(this).hide(); // disappear on click
      });
    });