我写了这个简单的html代码......
<!DOCTYPE html>
<html>
<head>
<title>Doc</title>
</head>
<body>
<canvas id = 'myCanvas' width = '800' height = '560'>Ah Snap!</canvas>
<script>
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var img = new Image();
img.src = 'E:\HTMLPaint1\image123.jpg';
img.onload = function() {
context.drawImage(img, 278, 117, 200, 200);
}
</script>
</body>
</html>
运行后，它不显示任何图像！（路径正确）
我做了一个例子看这里： examples
window.onload = function(){
var canvas = document.getElementById("myCanvas");
var context = canvas.getContext("2d");
var imageObj = new Image();
imageObj.onload = function(){
var destX = canvas.width / 2 - this.width / 2;
var destY = canvas.height / 2 - this.height / 2;
context.drawImage(this, destX, destY);
};
imageObj.src = "http://lh3.ggpht.com/YOsk5uW00GWrypKD_2PmGz1sGjsLZs4TMtUWUgX5RCTufXhO_HbpCjJz23K-m0KJX8QQv3ihghMhBFuB2I6nO6GXslhfR3GtTw2HQMYvYw";
};