Comments (1)
More details and fix:
I was using the canvas.todataurl string as data to submit, then processing/converting/saving without ever actually putting the canvas on the page anywhere. appendchild(canvas) screenshotdata = canvas.todaturl(), then removechild(canvas) fixes it, with in my edge case because there were so many many elements its cloning, it is also a timing issue, async then await the function to generate screenshot, await the canvas creation, then submit the data was also required
(
async function getSS() {
if(o('TEST')!=null) document.body.removeChild(o('TEST'));
await html2canvas(document.body).then(
function (c) {
c.id="TEST";
document.body.appendChild(c);
});
o('screenshotData').value = o('TEST').toDataURL();
document.body.removeChild(o('TEST'));
return true;
}
////---later
async function SubmitNotes(e) {
e.preventDefault();
await getSS();
EDIT: o() is sort of my fingerprint, you see it in almost every single javascript thing I do, sorry, for reference:
function o(obj) { return document.getElementById(obj); }
from html2canvas.
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from html2canvas.