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jQuery force numeric keyboard input

/ Published in: jQuery
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Copy this code and paste it in your HTML 
  1. //usage
  2. $("#yourTextBoxName").ForceNumericOnly();
  3.  
  4. //plugin
  5. jQuery.fn.ForceNumericOnly =
  6. function()
  7. {
  8.     return this.each(function()
  9.     {
  10.         $(this).keydown(function(e)
  11.         {
  12.             var key = e.charCode || e.keyCode || 0;
  13.             // allow backspace, tab, delete, arrows, numbers and keypad numbers ONLY
  14.             return (
  15.                 key == 8 || 
  16.                 key == 9 ||
  17.                 key == 46 ||
  18.                 (key >= 37 && key <= 40) ||
  19.                 (key >= 48 && key <= 57) ||
  20.                 (key >= 96 && key <= 105));
  21.         })
  22.     })
  23. };

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