Allow user only to change first digit in input field - Javascript jQuery

Javascript examples for jQuery:Form Input

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Description

Allow user only to change first digit in input field

Demo Code

ResultView the demo in separate window 

<html>
 <head> 
  <meta name="viewport" content="width=device-width, initial-scale=1"> 
  <script type="text/javascript" src="https://code.jquery.com/jquery-1.9.1.js"></script> 
  <script type="text/javascript">
    $(window).load(function(){/*from  www .  j av  a  2  s  .  co  m*/
var elem="000";
$('input').val(elem);
$(".text").keyup(function(){
    console.log($(this).val());
    $(this).val($(this).val().substring(0,1)+"00");
});
    });

      </script> 
 </head> 
 <body> 
  <input type="text" value="" class="text">  
 </body>
</html>

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