html2canvas usage

gistfile1.txt

// npm install --save html2canvas
import html2canvas from 'html2canvas';

download = () => {
    html2canvas(document.querySelector("#container")).then(canvas => {
      const img = canvas.toDataURL('image/png')
      let link = document.createElement('a');
      link.href = img;
      link.download = 'image.png';
      document.body.appendChild(link);
      link.click();
      document.body.removeChild(link);
  });