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Máscara Só valores númericos (Only numeric values mask)

/ Published in: JavaScript
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Copy this code and paste it in your HTML 
  1. <script type="text/javascript">
  2. function digitos(event){
  3.   if (window.event) {
  4.     // IE
  5.     key = event.keyCode;
  6.   } 
  7.   else if (event.which) {
  8.     // netscape
  9.     key = event.which;
  10.   }
  11.   if (key != 8 || key != 13 || key < 48 || key > 57)
  12.     return (((key > 47) && (key < 58)) || (key == 8 ) || (key == 13));
  13.     return true;
  14. }
  15. </script>
  16.  
  17.  
  18. <!--Campo Telefone-->
  19. <input type="text" onkeypress="return digitos(event, this);" />

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