版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/linysuccess/article/details/83899605
1 将Image画到canvas上面
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;
}
2 将Canvas的内容转为png图片
function convertCanvasToImage(canvas) {
var image = new Image();
image.src = canvas.toDataURL("image/png");
return image;
}