当前位置: 首页 > 图文教程 > 网络编程 > ASP > javascript asp教程添加和修改

ASP
ASP下经常用的字符串等函数参考资料
asp下连接数据库 ASP链接数据库字符串大全总结
asp内置对象 ObjectContext 事务管理 详解
asp 内置对象 Application 详解
ASP中 SQL语句 使用方法
ASP 中 Split 函数的实例分析
ASP 中 DateDiff 函数详解 主要实现两日期加减操作
asp 存贮过程 (SQL版asp调用存储过程)
利用ASP实现在线生成电话图片效果脚本附演示
使用ASP记录在线用户的数量的代码
关于ASP生成伪参数技巧 简洁实用的伪(僞)参数
asp 关键词字符串分割如何实现方法
用ASP编写的加密和解密类
ASP之处理用Javascript动态添加的表单元素数据的代码
asp下最常用的19个基本技巧
一些Asp技巧和实用解决方法
asp实现一个统计当前在线用户的解决方案
asp下的一个很简单的验证码程序
asp又一个分页的代码例子
asp实现防止从外部提交数据的三种方法

ASP 中的 javascript asp教程添加和修改


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-13   浏览: 104 ::
收藏到网摘: n/a

The Connection Execute():

If you want to retrieve data from a database then you have no choice but to use a Recordset. However, for the purposes of adding, updating, and deleting data you don't necessarily have to have a Recordset. It's up to you.

For the purposes of adding, updating and deleting you can avoid the Recordset by using the Execute() method.

Get Started:

Below is the script for Lesson 19.

<%@LANGUAGE="JavaScript"%>
var strConnect="Provider=Microsoft.Jet.OLEDB.4.0; Data Source="
strConnect += Server.MapPath("\\GOP") + "\\datastores\\gop.mdb;"
<!-- METADATA TYPE="typelib"
FILE="C:\Program Files\Common Files\System\ado\msado15.dll" -->
<HTML>
<HEAD>
<TITLE>Administrator Page - Changing the Mailing List</TITLE>
</HEAD>
<BODY LINK="red" VLINK="red" ALINK="crimson">
<H2>Administrator Page</H2>
<H3>Changing a the Mailing List</H3>
<%
if (Request.Form("Delete") > "")	{	var sql="DELETE FROM Address WHERE ID = " + Request.Form("ID") + ";"	}
else	{	var firstName = new String(Request.Form("firstName"))	var lastName = new String(Request.Form("lastName"))	var Address = new String(Request.Form("Address"))	var City = new String(Request.Form("City"))	var myRegExp = /[']/g;	firstName = firstName.replace(myRegExp, ''');	lastName = lastName.replace(myRegExp, ''');	Address = Address.replace(myRegExp, ''');	City = City.replace(myRegExp, ''');	var sql="UPDATE Address SET firstName= '" + firstName + "' , lastName='"	sql += lastName + "' , Address='" + Address + "' , City='"	sql += City + "' , State='" + Request.Form("State") + "' , Zip='"	sql += Request.Form("Zip") + "' WHERE ID = " + Request.Form("ID") + ";"	}
var objConn=Server.CreateObject("ADODB.Connection");
objConn.Open(strConnect)
objConn.Execute(sql)
objConn.Close()
objConn = null;
Response.Write("The member has been updated in the database.")
Response.Write("<A HREF=\"../files/committee.asp\">")
Response.Write("Click here to see it.</A>")
%>

There's no link to see this one in action. I did that for security reasons. I just want to point out a few highlights.

Danger in The Single Quote:

You'll notice that I replace single quote marks with the HTML encoded equivalent. I did that using the following code.

var myRegExp = /[']/g;
firstName = firstName.replace(myRegExp, ''');

The single quote is the only character you cannot input into a database using an ASP application. Everything else is fair game. DO NOT accept any text from users into your database without replacing all single quotes. To use an analogy, the single quote is like a key that opens up your entire database. Hackers will tear your application to shreds if you let someone input single quotes.

Execute( ):

The only other thing I want to spend any time with is objConn.Execute(sql). The variable sql takes on one of two definitions depending on the result of an "if" statement. In this case sql does all the work, and we never need a recordset.