I am using onkeyup=this.value=this.value.toUpperCase();to change input text value in uppercase. This is working but my need is to change a single letter in input box without using mouse event. If i use left arrow key to move cursor backward onkeyup event gets triggered and the cursor moves to end. How do I modify this script, so that I can navigate backward using arrow keys and modify a text somewhere in between

The current code looks like this...

<h:inputText value=#{_input.response} autocomplete=off onmouseover=this.focus(); onkeyup=this.value=this.value.toUpperCase();/>