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javascript auto uppercase

/ Published in: JavaScript
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Copy this code and paste it in your HTML 
  1. Test <input type="text" onkeydown="f(this)" onkeyup="f(this)" onblur="f(this)" onclick="f(this)" />
  2.  
  3. <script type="text/javascript">
  4. function f(o){o.value=o.value.toUpperCase().replace(/([^0-9A-Z])/g,"");}
  5. </script>

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