title: Pixel width of monospace character
body: <p>I am wondering, is it possible to calculate the pixel width of a character in a monospace font? 
  I am using monospace fonts because I need every character to occupy the same width in my DIV, but I am unsure how to reliably get the actual pixel width of it. I need to fix the width in order to do calculations in JavaScript.
  Here's my css:</p>
  
  <pre><code>font-family: monospace;
  font-size: 15px; 
  </code></pre>
  
  <p>Is this possible?</p>