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做一个分页程序
用ASP实现网站的“目录树”管理
网页在线人数统计的做法
用ASP生成Chart
用ASP构建你的网站新闻发布(一)
用ASP构建你的网站新闻发布(三)
如何处理ASP中的图象
用ASP编写计数器
ASP防盗链及防下载的方法
ASP数据类型
ASP组件中的安全问题
ASP漏洞集-ASP漏洞分析和解决方法
ASP漏洞集-Carello Web 使 ASP 源码暴露(APP,缺陷)
ASP漏洞集-MS IIS server的ASP安全缺陷(MS,缺陷)
ASP漏洞集-MS IIS虚拟主机ASP源码泄露(MS,缺陷)
ASP漏洞集-给你的FileSystemObject对象加把锁
ASP漏洞集-通过asp入侵web server,窃取文件毁坏系统
ASP漏洞集-MS IIS server/Frontpage Ext Server
ASP漏洞集-虚拟web目录容易泄露ASP源代码 (MS,缺陷)
ASP漏洞集-用ASP实现网页保密的两种方法

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: 209 ::
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.