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restrict non-numeric entries

/ Published in: JavaScript
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  1. function numeralsOnly(evt) {
  2.     evt = (evt) ? evt : event;
  3.     var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : ((evt.which) ? evt.which : 0));
  4.     if (charCode > 31 && (charCode < 48 || charCode > 57)) {
  5.         return false;
  6.     }
  7.     return true;
  8. }
  9.  
  10. yourFiled.onkeypress = numeralsOnly(e);

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