title: How do I force the display of a decimal in an ExtJS NumberField to a certain precision?
body: <p>I have a form with a <code>NumberField</code> that gets values of type <code>float</code> from JSON. If the values happen to be whole numbers, then no decimal places are shown. I would like to show 2 decimal places at all times. Is there a config option for this?</p>
  
  <p>Here's my declaration: </p>
  
  <pre><code>items: [
      { 
          fieldLabel: 'Net Sales',
          name: 'netSales',
          allowBlank:false,
          decimalPrecision:2
      },
  </code></pre>