為什么只有畫布 顯示不出直線？
<!DOCTYPE html>
<html lang="en">
<head>
? ?<meta charset="UTF-8">
? ?<title></title>
</head>
<body>
<canvas id="canvas" ?width="1024" height="768" style="border:1px solid #aaa;display:block;margin:50px auto;"></canvas>
<script>
windows.onload=function(){
var canvas=document.getElementById("canvas");
var context = canvas.getContext("2d");
//使用context繪制
context.moveTo(100,100);
context.lineTo(700,700);
context.stroke();
? ?}
</script>
</body>
</html>
2015-06-21
windows.onload=function(){ ?
這里多一個s，應(yīng)該是window.onload，粗心大意，搞的我看了半天沒錯，測試了才知道