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How to Prevent only Two Digit After Decimal in JavaScript

  1. <HTML>  
  2.   
  3. <HEAD>  
  4.     <script type="text/Javascript"> function checkDec(el)  
  5.     {   
  6.       var ex = /^[0-9]+\.?[0-9]*$/;  
  7.       if(ex.test(el.value)==false)  
  8.       {  
  9.         el.value = el.value.substring(0,el.value.length - 1);  
  10.       }  
  11.     }   
  12.     </script>  
  13. </HEAD>  
  14.   
  15. <BODY>  
  16.     <input type="text" id="" onkeyup="checkDec(this);" />   
  17.  </BODY>  
  18.   
  19. </HTML>