参考代码如下:
<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>