title: Javascript adding numbers with commas
body: <p>I have four HTML fields, I grab their values and add them, in an equation that looks like this:</p>
  
  <pre><code>Total = Number(value1) + Number(value2) + Number(value3) + Number(value4)
  </code></pre>
  
  <p>Now some of the values might be equal to <code>1,078.00</code>, I get <code>NaN</code> as a result. What should I do ?</p>