Uploaded all JS files

breakout_2.js

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+// JAVASCRIPT-2: MAKE BALL BOUNCE
+// © 2018, wbamberg
+var canvas = document.getElementById("myCanvas");
+var ctx = canvas.getContext("2d");
+var ballRadius = 12;
+var x = ballRadius;
+var y = ballRadius;
+var dx = 2;
+var dy = -2;
+
+function drawBall() {
+    ctx.beginPath();
+    ctx.arc(x, y, ballRadius, 0, 2 * Math.PI);
+    ctx.fillStyle = "#FF0000";
+    ctx.fill();
+    ctx.closePath();
+}
+
+function draw() {
+    ctx.clearRect(0, 0, canvas.width, canvas.height);
+    drawBall();
+    
+    if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
+        dx = -dx;
+    }
+    if(y + dy > canvas.height-ballRadius || y + dy < ballRadius) {
+        dy = -dy;
+    }
+    
+    x += dx;
+    y += dy;
+}
+
+setInterval(draw, 10);