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技巧研究：ASP Error对象的相关知识
ASP模拟MVC模型的编程方式
学ASP应该注意ASP程序书写的规范
用文本+ASP打造新闻发布系统
ASP Session对象的集合以及属性方法事件
ASP防止盗链或防止下载的方法
ASP开发中存储过程应用详解
ASP脚本语言的19个基本技巧使用
ASP中使用Form和QueryString集合
在ASP中访问和更新Cookies集合
在ASP中操作HTTP报头方法分析
建立三层结构的ASP应用程序
ASP动态网页编程的19个基本技巧
ASP教程:制作登陆验证页面程序
asp正则表达式详细说明
使用ASP订制自己的XML文件读写方法
ASP中的Debug类--VBScript
Asp中如何设计跨越域的Cookie
DHTML+XML+ASP+CSS的树形目录
实例一则 ASP程序中输出Excel文件

No. « 90 91 92 93 »

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: 207 ::
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.