JSFiddle - React, Tailwind, and code Playground

by Vinoth kumar

HTML

<HTML>
  <HEAD>
    <SCRIPT language=Javascript>
       <!--
       function isNumberKey(evt)
       {
          var charCode = (evt.which) ? evt.which : evt.keyCode;
          if (charCode == 48 || charCode == 46 
           )
             return false;

          return true;
       }
       //-->
    </SCRIPT>
  </HEAD>
  <BODY>
    <INPUT id="txtChar" onkeypress="return isNumberKey(event)" 
           type="text" name="txtChar">
  </BODY>
</HTML>