JS 输入a-z， JS数字转字母

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script>
for(var i=97;i<=122;i++){
document.writeln(String.fromCharCode(i)+'<br />')
index++;
}
</script>
</head>
<body>
</body>
</html>
mayb
