title: How to get a SVG's aspect ratio?
body: <p>Is there a way to get a loaded svg's aspect ratio? I want to be able to know the scaling that goes into the <code>preserveAspectRatio</code> property. The <a href="https://developer.mozilla.org/en/docs/Web/SVG/Attribute/preserveAspectRatio" rel="nofollow">documentation</a> states that for <code>meet</code>:</p>
  
  <ul>
  <li>aspect ratio is preserved</li>
  <li>the entire viewBox is visible within the viewport</li>
  <li>the viewBox is scaled up as much as possible, while still meeting the other 
  criteria</li>
  </ul>
  
  <p>Is there a way to retrieve the aspect ratio that the property somehow knows in JS?</p>