判断浏览器是否支持canvas，具体代码如下： 复制代码代码如下:
<!DOCTYPE html>
<head>
<meta charset=utf-8 />
<title>canvas</title>
<script type="text/javascript">
window.onload = function(){
/**判断浏览器是否支持canvas**/
try{
document.createElement("canvas").getContext("2d");
var addDiv = document.createElement("div");
addDiv.innerHTML="支持canvas";
document.body.appendChild(addDiv);
}catch(e){
var addDiv = document.createElement("div");
addDiv.innerHTML="浏览器不支持canvas";
document.body.appendChild(addDiv);
}
};
</script>
</head>
<body>
</body>
</html>
