title: validate only numeric but should not allow if the numeric is only 0
body: <p>I tried with</p>
  
  <pre><code>onkeypress='return event.charCode &gt;= 49 &amp;&amp; event.charCode &lt;= 57'
  </code></pre>
  
  <p>omitting 0 but i could not able to type 10 or 20 or any numeric values that has 0.</p>
  
  <p>Note: I don't want to have <code>0</code> as a value to be typed in the <code>text</code> field.</p>