title: Without Canvas(HTML5 element), how to measure TextMetrics like ascent, descent, CapHeight of font in JavaScript
body: <p><strong>Note:</strong></p>
  <ol>
  <li>I need ascent descent and CapHeight of font and not just line-height.</li>
  <li>Need metrics using client-side Scripting(JavaScipt).</li>
  </ol>