为什么这个代码报引用错误的
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>
<body>
<canvas id="canvas" style="border:1px solid #aaa; display:block; margin:50px auto;">
当前浏览器不支持Canvas，请更改浏览器再试。
</canvas>
<script>
window.onload=function(){
var canvas=document.getElementById("canvas");
canvas.width=1024;
canvas.height=768;
var context=convas.getContext("2d")
context.moveTo(100,100)
context.lineTo(700,700)
context.lineWidth=5
context.strokeStyle="#005588"
context.stroke()
}
</script>
</body>
</html>
慕少5768339浏览 908回答 1
1回答
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var context=canvas.getContext("2d");你调用的时候canvas打错了
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