Membuat Uppercase pada Keypress Textbox dan Textarea dengan Javascript

Here convert lowercase chars to uppercase as the user types using javascript.

type text on HTML code :
 <textarea id="textarea"></textarea>
<br>
<input type="text" id="input"></input>


type text on Java Script :

$("#input , #textarea").on('input', function(evt) {
     var input = $(this);
     var start = input[0].selectionStart;
     $(this).val(function (_, val) {
       return val.toUpperCase();
     });
     input[0].selectionStart = input[0].selectionEnd = start;
   });

Link sample Click DEMO APPLICATION