I'm trying to conver the String "Hopper" to ASCII code and this is what I have so far. Unfornately, it only displays the ASCII code for the last character or 114. And I would like to the code to display all the codes for every character. What am I doing wrong?

Code:
<script type="text/javascript">
function thisFunction() {
	var someString = "Hopper";
	var j;
	for(j = 0; j < someString.length; j++) {
		document.thisForm.clearText.value =  someString.charCodeAt(j);
	}
}
</script>

<form name="thisForm">
<input type="button" value="Pass Value" onclick="thisFunction()"/>
<br/>
<textarea rows="6" cols="30" name="clearText"></textarea>
</form>