<!DOCTYPE?html>
<html>
<head>
????<meta?charset="utf-8">
????<title>canvas</title>
</head>
<body>
<canvas?id="canvas"?style="display:block;margin:10px?auto;
?????????border:1px??solid?#aaa;"></canvas>
<script>
????window.onload?=?function()?{
????????var?canvas=document.getElementById('canvas');
????????var?context=canvas.getContext('2d');
????????canvas.weight?=?1000;
????????canvas.height?=?300;
????????context.beginPath();
????????context.moveTo(20,20);
????????context.lineTo(200,100);
????????context.closePath();
????????context.lineWidth=5;
????????context.stroke();
????}
</script>
</body>
</html>
2015-10-22
您寫錯了~
2015-10-20
你好，這里的寬度應該是“width”，而不是“weight”，改過來就可以了。