Take a screenshot of canvas and download as jpg

gistfile1.txt

let takeScreenShot=()=>{
  let d=document;
  let e = d.createElement("a");
  e.setAttribute("href", renderer.domElement.toDataURL("image/jpeg"));
  e.setAttribute("download", "Screenshot.jpeg");
  e.style.display = "none";
  d.body.appendChild(e);
  d.click();
  d.body.removeChild(e);
}