Insert only numeric value (js preventDefault uses)

Sometime we need to protect from non-numeric value in input/textbox. This script allow only numeric value in box. When others key will be pressed its nothing to do.

<script src="http://code.jquery.com/jquery-1.8.2.js" type="text/javascript"></script>
<script type="text/javascript">
        $(function () {
         $('#number').keydown(function (e) {
         if (e.shiftKey || e.ctrlKey || e.altKey) {
          e.preventDefault();
         } else {
          var key = e.keyCode;
          if (!((key == 8) || (key == 46) || (key >= 35 && key <= 40) || (key >= 48 && key <= 57) || (key >= 96 && key <= 105))) {
           e.preventDefault();
          }
         }
         });
        });

</script>
Input only number:<input id="number" name="name" type="text" />

Insert only numeric value (js preventDefault uses)

Saturday, July 19, 2014

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