为什么后面括号中的中文字符乱码?
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>日期对象 </title>
<script type="text/javascript">
var mydate=new Date();
document.write("当前时间"+mydate+"<br>");
mydate.setTime(mydate.getTime() + 2* 60 * 60 * 1000);
document.write("推迟二小时时间" + mydate);
</script>
</head>
<body>
</body>
</html>
//下面是显示效果
当前时间Sun Feb 19 2017 19:58:00 GMT+0800 (ä¸å½æ åæ¶é´)
推迟二小时时间Sun Feb 19 2017 21:58:00 GMT+0800 (ä¸å½æ åæ¶é´)