Code for javascript to start the game

To start a simple game using JavaScript, you can create a basic HTML file with a canvas element where your game will be displayed. Here's an example code to get you started:

```html
<!DOCTYPE html>
<html>
<head>
<title>Simple Game</title>
<style>
canvas {
border: 1px solid black;
}
</style>
</head>
<body>
<canvas id="gameCanvas" width="800" height="600"></canvas>
<script>
const canvas = document.getElementById('gameCanvas');
const ctx = canvas.getContext('2d');

// Game loop function
function gameLoop() {
// Update game logic here
// Render game objects here

requestAnimationFrame(gameLoop);
}

// Start the game loop
gameLoop();
</script>
</body>
</html>
```

This code sets up a simple HTML page with a canvas element and a script tag where you can write your game logic. The `gameLoop` function will be called repeatedly to update and render the game. You can add event listeners, game objects, and more game logic inside the `gameLoop` function to create your own game.

You can expand on this code to include more advanced game features like player input, collision detection, scoring, etc. Hope this helps you get started with building your game in JavaScript!