JS實現HTML5 Canvas圖像數據和圖片的互相轉化

使用JavaScript將圖片拷貝進畫布

function convertImageToCanvas(image) {
	var canvas = document.createElement("canvas");
	canvas.width = image.width;
	canvas.height = image.height;
	canvas.getContext("2d").drawImage(image, 0, 0);

	return canvas;
}

用JavaScript將畫布保持成圖片格式

function convertCanvasToImage(canvas) {
	var image = new Image();
	image.src = canvas.toDataURL("image/png");
	return image;
}

 

用JavaScript將Canvas內容轉化成圖片的方法：http://www.webhek.com/post/convert-canvas-image.html