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

ASP
用ASP编写图片计数器
最简洁的多重查询的解决方案
披着羊皮的大野狼 ASP中Session技巧
简单入门ASP变量
简单入门ASP子程序
几款Access 在线管理工具(ASP)比较
ASP实例教程:Form集合
ASP实例教程:FileSystemObject对象
关于ASP Recordset 分页出现负数解决方法及建议
sdcms添加在线提交功能
如何配置IIS既可以运行ASP又可以运行PHP
Asp获取当日文章并支持前一天后一天的方法
ASP动态include文件
用ASP开发网页需要牢记的注意事项
利用ASP发送和接收XML数据的处理方法
Session对象失效的客户端解决方法
通过数组给您的文件排序
一次性下载远程页面上的所有内容
ASP生成不重复随机数字的另类思路
asp模板引擎终结者(WEB开发之ASP模式)

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: 84 ::
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.