当前位置: 首页 > 图文教程 > 网络编程 > ASP > javascript asp教程 日期相关

ASP
ASP编程入门进阶（廿一）：DAO SQL之建立数据库表
ASP应用之模板采用
ASP上传图片功能的又一实现（OLE对象）
asp中FSO复制文件代码
asp复制文件夹代码
实例演练ASP+XML编程比较全的了
利用ASP从远程服务器上接收XML数据的方法
PJ-Blog教程┊增强博客用户体验～让发表内容的同时拷贝到剪贴板以防丢失
TSYS一个新闻多种特性时如何进行前台更新?
TSYS资源特性的效率提高方法
重置TSYS系统中的所有"生成的文件"成"未生成文件"
TSYS中生成静态页时溢出: ''CInt''
asp实现防止站外提交内容的两个方法
ASP中生成文本文件的两种方式
ASP是否可以定时触发事件
ASP解压缩（在线解压缩类）
使用ASP删除指定IIS站点
使用ASP控制指定站点解析脚本语言函数
HTML标签及ASP函数速查表
如何使用Administrators组用户运行ASP程序

No. « 48 49 50 51 »

技术文章搜索

关键字

ASP 中的 javascript asp教程 日期相关

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-09-13   浏览: 245 ::
收藏到网摘: n/a

JavaScript is loosely typed. Database files are not. If you put text into a Boolean database column or a Boolean value into a date/time column, then you will get an error.

For the most part this is not a problem, except for date/time. It does not correspond to the JavaScript Date Object. So, we have to tear Date apart and rebuild it from scratch. If we don't, then we get a type mismatch error.

Take a look at the snippet below. (It's not part of our lesson, but I want you to look at it anyway.) Please notice DateTime. 

objConn.Open(strConnect)
sql = "INSERT INTO FoloVisit (SessionID,VisitTime) "
sql+= "Values ('" + Session.SessionID + "',#" + DateTime + "#);"
objConn.Execute(sql)

DateTime has to be in a very particular format: #mm/dd/yyyy hh:mm:ss [a|p]m# As you well know new Date() doesn't even come close to this format. We will fix that in the script below.

Get Started:

Below is the script for Lesson 20. 

<%@LANGUAGE="JavaScript"%>
<SCRIPT LANGUAGE="VBScript" RUNAT="Server">
Dim VBTime,VBDate,VBDateTime
VBTime = Time & " "
VBDate = Date & " "
VBDateTime = Date & " " & Time
</SCRIPT>
<%
function whatTimeIsIt()	{	var m=new Date()	var minute=m.getMinutes()	var second=m.getSeconds()	var ampm=false	if (minute >=0 && minute < 10)	{ minute=("0" + minute)	}	if (second >= 0 && second < 10 )	{ second=("0" + second) }	var hours=m.getHours()	if (hours > 12)	{ ampm=true	hours=hours-12 }	if (hours==12)	{ ampm=true }	if (hours == 0)	{ hours=hours+12	ampm=false }	if (ampm)	{ ampm=" PM" }	else	{ ampm=" AM" }	var myTime=hours + ":" + minute + ":" + second + ampm	return myTime;	}
var DateTime = new Date();
var Month = (DateTime.getMonth() + 1) + "/";
var Day = DateTime.getDate() + "/";
var Year = DateTime.getFullYear();
var JustTheDate = Month + Day + Year;
var JustTheTime = whatTimeIsIt();
var DateTime = Month + Day + Year + " " + whatTimeIsIt();
Response.Write("<HTML>\r")
Response.Write("<STRONG>JavaScript Time</STRONG><BR>\r")
Response.Write("The date in proper database format is: " + JustTheDate + "<BR>\r")
Response.Write("The time in proper database format is: " + JustTheTime + "<BR>\r")
Response.Write("The date & time together are: " + DateTime + "<BR>\r")
Response.Write("<HR>\r")
Response.Write("<STRONG>VBScript Time</STRONG><BR>\r")
Response.Write("The date in proper database format is: " + VBDate + "<BR>\r")
Response.Write("The time in proper database format is: " + VBTime + "<BR>\r")
Response.Write("The date & time together are: " + VBDateTime + "<BR>\r")
Response.Write("</HTML>")
%>

Click Here to run the script in a new window.

Living on VBScript Time:

The other way to solve the problem is to use the VBScript date and time Objects. What can I say? If you can't beat 'em, steal from 'em!

Time For a Tangent:

If all you want to do is store new Date() exactly as-is in your database then do so in a text or memo column. The disadvantage of using this tactic is that SQL cannot sort items correctly by date and time. Instead, they'll be sorted by alphabetical order.

Final Thoughts:

That's the end of the lesson plan. I have received messages from all over the world. Thank you for your kind words. If you have questions or comments you can click onto the link for the home page and then there's a link to contact me.