html
html
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<!DOCTYPE html>
<html>
<head>
<style type="text/css">
canvas{
background:#abc;
height:300px;
width:300px;
border:4px solid red;
}
</style>
<title></title>
</head>
<body>
<canvas id="canvas" ></canvas>
</body>
<script type="text/javascript">
var canvas = document.getElementById("canvas");
var ctx=canvas.getContext("2d");
var obj={
x:10,y:10,
size:10,
speed:4
}
function drawBall(){
ctx.beginPath();
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css
css
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body {
}
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js
js
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