lesson6.html

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Function</title>
<script type="text/javascript">
var flag = false;
var j = 32;
function startloop(startvalue) {
	flag = false;
	var temp = "";
	for (var i=startvalue; i<=j; i++) { //9
		temp = temp + String.fromCharCode(i) + " ";
	}
	document.getElementById("loop").innerHTML = temp;
	j=j+1; //j++
}

function finishloop(endvalue) {
	if (flag == true)
		return false;
	var temp = "";
	for (var i=j; i<=endvalue; i++) { //9
		temp = temp + String.fromCharCode(i) + " ";
	}
	var inner = document.getElementById("loop").innerHTML;
	inner = inner + temp;
	document.getElementById("loop").innerHTML = inner;
	flag = true;
}

</script>
</head>

<body>
<input type="button" value="Write Loop" onclick="startloop(31);" />
<input type="button" value="Finish Loop" onclick="finishloop(126);" />
<div id="loop" name="loop"></div>
</body>
</html>