输出12.008e2 ，0x24， 078， 0xafe
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>document.write</title>
<script type="text/javascript">
a = 0xafe;
document.write("0xafe转为10进制为:"+a.toString(10)+"<br>");
a = 12.008e2;
document.write("12.008e2转为10进制为:"+a.toString(10)+"<br>");
a = 0x24;
document.write("0x24转为10进制为:"+a.toString(10)+"<br>");
a = 078;
document.write("078转为10进制为:"+a.toString(10)+"<br>");
</script>
</head>
<body>
</body>
</html>