canvas(图像)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
canvas{
background: #ddd;
}
</style>
</head>
<body>
<canvas id="c2" width="500" height="400">
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</canvas>
<script>
var c2=document.getElementById('c2');
var ctx=c2.getContext('2d');
var p3=new Image();
p3.src='img/canvas.jpg';
p3.οnlοad=function(){
console.log(p3.width);
ctx.drawImage(p3,0,0);
}
</script>
</body>
</html>
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