js获取标准北京时间

<SCRIPT LANGUAGE = "JavaScript">

var xmlhttp = new ActiveXObject("MSXML2.XMLHTTP.3.0");

xmlhttp.open("GET", "http://bjtime.cn", false);

xmlhttp.setRequestHeader("If-Modified-Since", "bjtime");

xmlhttp.send();

var dateStr = xmlhttp.getResponseHeader("Date");

var date = new Date(dateStr);

var year = date.getFullYear();

var month = date.getMonth() + 1;

var date1 = date.getDate();

var hour = date.getHours();

var minutes = date.getMinutes();

var second = date.getSeconds();

alert(date + "  |  " + year + "年" + month + "月" + date1 + "日" + hour + "时" + minutes + "分" + second + "秒");

</SCRIPT>