html2canvasie不兼容,javascript–html2canvas保存为jpeg而无需在浏览器中打开

下载器功能使它更容易&＃xff1a;

function download(strData, strFileName, strMimeType) {

var D &＃61; document,

A &＃61; arguments,

a &＃61; D.createElement("a"),

d &＃61; A[0],

n &＃61; A[1],

t &＃61; A[2] || "text/plain";

//build download link:

a.href &＃61; "data:" &＃43; strMimeType &＃43; "," &＃43; escape(strData);

if (window.MSBlobBuilder) {

var bb &＃61; new MSBlobBuilder();

bb.append(strData);

return navigator.msSaveBlob(bb, strFileName);

} /* end if(window.MSBlobBuilder) */

if (&＃39;download&＃39; in a) {

a.setAttribute("download", n);

a.innerHTML &＃61; "downloading...";

D.body.appendChild(a);

setTimeout(function() {

var e &＃61; D.createEvent("MouseEvents");

e.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);

a.dispatchEvent(e);

D.body.removeChild(a);

}, 66);

return true;

} /* end if(&＃39;download&＃39; in a) */

; //end if a[download]?

//do iframe dataURL download:

var f &＃61; D.createElement("iframe");

D.body.appendChild(f);

f.src &＃61; "data:" &＃43; (A[2] ? A[2] : "application/octet-stream") &＃43; (window.btoa ? ";base64" : "") &＃43; "," &＃43; (window.btoa ? window.btoa : escape)(strData);

setTimeout(function() {

D.body.removeChild(f);

}, 333);

return true;

} /* end download() */

function screenGrabber() {

html2canvas([document.body], {

logging: true,

useCORS: true,

onrendered: function (canvas) {

img &＃61; canvas.toDataURL("image/jpeg");

download(img, "modified.jpg", "image/jpeg");

}

});

}