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## Step 1: Setting up the environment
+ Open your favorite code editor (e.g. Visual Studio Code).
+ Create a new HTML file and name it "index.html".
+ Create another file and name it "script.js".
## Step 2: Basic HTML structure
```html
Simple JavaScript Game
```
## Step 3: Developing JavaScript
```js
// 1. Get the canvas element
const canvas = document.getElementById('gameCanvas');
const ctx = canvas.getContext('2d');
// 2. Define variables
let x = canvas.width / 2;
let y = canvas.height - 30;
let dx = 2;
let dy = -2;
const ballRadius = 10;
// 3. Function to draw the ball
function drawBall() {
ctx.beginPath();
ctx.arc(x, y, ballRadius, 0, Math.PI * 2);
ctx.fillStyle = "#0095DD";
ctx.fill();
ctx.closePath();
}
// 4. Main drawing function
function draw() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawBall();
// 5. Update ball position
x += dx;
y += dy;
// 6. Check for collisions with edges
if (x + dx > canvas.width - ballRadius || x + dx < ballRadius) {
dx = -dx;
}
if (y + dy > canvas.height - ballRadius || y + dy < ballRadius) {
dy = -dy;
}
}
// 7. Main game loop
function mainLoop() {
draw();
requestAnimationFrame(mainLoop);
}
// 8. Start the game
mainLoop();
```
**The result**:
In this simple example I've created a game where a ball moves inside a canvas and bounces off the edges. You can add features such as player control, collisions with other objects, points, etc. Remember that this is a tutorial for javascript beginners. Have fun creating your own game!
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