convert-svg-polygon-to-path

by Kirill Belyaev

HTML

<svg class="elephant">
  <g transform="scale(1.5)">    
    <polygon fill="#000000" points="25.693,17.699 8.763,26.584 0.598,56.484 9.003,76.657   11.764,75.815 11.404,74.615 4.68,56.724 13.686,49.999 14.886,47.598 14.886,51.44 20.53,47.358 23.412,49.579 30.211,82.301   37.537,82.301 41.423,58.404 68.438,62.968 74.084,63.089 81.289,82.301 91.974,82.301 87.892,61.647 94.977,40.513 97.761,57.646   97.321,60.208 98.274,65.746 99.402,59.967 98.24,57.566 96.297,39.313 81.169,23.342 33.4,23.305 32.36,24.025 30.497,22.262"></polygon>
  </g>
</svg>

JavaScript

var polys = document.querySelectorAll('polygon,polyline');
[].forEach.call(polys,convertPolyToPath);

function convertPolyToPath(poly){
  var svgNS = poly.ownerSVGElement.namespaceURI;
  var path = document.createElementNS(svgNS,'path');
  var points = poly.getAttribute('points').split(/\s+|,/);
  var x0=points.shift(), y0=points.shift();
  var pathdata = 'M'+x0+','+y0+'L'+points.join(' ');
  if (poly.tagName=='polygon') pathdata+='z';
  path.setAttribute('id',poly.getAttribute('id'));
  path.setAttribute('fill',poly.getAttribute('fill'));
  path.setAttribute('stroke',poly.getAttribute('stroke'));
  path.setAttribute('d',pathdata);

  poly.parentNode.replaceChild(path,poly);
}