go.js：画布内容导出为图片

var date = new Date().getTime();
    var Img = Diagram.makeImage({
        scale: 2,
        background: "white"
    });
    var imgSrc = Img.src;
    var filename = date + ".png";
    var a = document.createElement("a");
    a.style = "display: none";
    a.href = imgSrc;
    a.download = filename;
    requestAnimationFrame(function () {
        a.click();
    });

原文链接：https://blog.csdn.net/weixin_37064409/java/article/details/83415118