捕获HTML画布作为gif / jpg / png / pdf？ [英] Capture HTML Canvas as gif/jpg/png/pdf?

问题描述

是否可以捕获或打印html画布中显示的图像或pdf？

Is it possible to capture or print what's displayed in an html canvas as an image or pdf?

我想通过canvas生成图像，并且能够从该图像生成png。

I'd like to generate an image via canvas, and be able to generate a png from that image.

推荐答案

糟糕。原答案是针对一个类似的问题。已修改：

Oops. Original answer was specific to a similar question. This has been revised:

var canvas = document.getElementById("mycanvas");
var img    = canvas.toDataURL("image/png");

使用IMG中的值，您可以将其作为新图像写入，如下所示：

with the value in IMG you can write it out as a new Image like so:

document.write('<img src="'+img+'"/>');

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