Question

How do you manipulate text inside of a textarea as the user types in it?

Answer 1

You’d use the onKeyUp event to detect key presses, then use the value property of the textarea to get and/or set the value.

<script language='text/javascript'>     function change_text() {         // get the text         text = document.getElementById('your_textarea').value;          // ...          // set the text         document.getElementById('your_textarea').value = text;     } </script>  ...  <textarea id='your_textarea' onKeyUp='change_text()'></textarea>