IDC资讯中心
SurveyDescr.asp
<!–#include file = "include/Startup.asp"–>
<!–#include file = "utils/Survey.asp"–>
<%
// ============================================
// NOTE: all source code downloaded from CoverYourASP was written by
// James Shaw (unless stated otherwise), and is copyright (c) 2000 by
// James Shaw. You may use this source code on your web sites, but
// please dont publish or distribute in any way.
//
// I would appreciate an HTML comment in any code you use, i.e.
// <!– portions (c) james@CoverYourASP.com–>
// (see Footer(), documented in SSI.asp for details on how to do this)
//
// <shameless plug>
// Please contact me to discuss any ASP contract work you may have.
// </shameless plug>
// ============================================
// output relevant meta tags
Init( "Survey your readers" );
// output common top of page
Header( Survey your readers );
// output page content
Content ( );
// output common bottom of page
Footer( );
// ============================================
// the content of this page – every page has a function Content that
// is called above.
// ============================================
function Content ( )
{
Out ( <td colspan=2 width="80%" valign="top"> );
// if the survey hasnt been submitted yet…
if ( !Request.Form.Count )
{
//…display some blah, blah
Out ( Finally, surveys come to CoverYourASP! I\ve been wanting to ask you guys and gals
questions for a long time, and now I can. It\s up to you if you want to answer of course! );
Out ( <p>Of course, the real benefit to you is that if you tell me what you like I\ll probably
provide it. If you send in your <a href="Donate.asp">donations</a> the probability increases rather
dramatically! );
Out ( <p>Take the example survey below if you have the time and inclination. I plan to post more
in a special survey category, and start offering incentives to take them. );
Out ( <p>Afterwards, look at the code. I think you\ll be surprised how simple it is to create
surveys with this code. This page has one function call in it, with just one parameter – the name of the
survey! All questions, answers and results are stored in the database. );
}
// show the survey, or process its input
ProcessSurvey ( Who are you and what do you think? );
if ( !Request.Form.Count )
Out ( <p><a href="ShowSource.asp?page=SurveyDescr"><img src="images/source.gif" align="right"
border=0></a>Please submit the survey first before looking at the source code – this link is on the result
page too! );
else
Out ( <p><center><a href="ShowSource.asp?page=SurveyDescr"><img src="images/source.gif"
border=0></a></center> );
Out ( </td> );
Out ( <td width="20%" valign="top"> );
// show rotating banners
ShowBanners ( 4 );
Out ( </td> );
}
%>
utils/Survey.asp
<%
// ============================================
// NOTE: all source code downloaded from CoverYourASP was written by
// James Shaw (unless stated otherwise), and is copyright (c) 2000 by
// James Shaw. You may use this source code on your web sites, but
// please dont publish or distribute in any way.
//
// I would appreciate an HTML comment in any code you use, i.e.
// <!– portions (c) james@CoverYourASP.com–>
// (see Footer(), documented in SSI.asp for details on how to do this)
//
// <shameless plug>
// Please contact me to discuss any ASP contract work you may have.
// </shameless plug>
// ============================================
// ============================================
// display or process the named survey
// ============================================
function ProcessSurvey ( sName )
{
// has the survey form been submitted?
if ( Request.Form.Count )
{
// connect to the database
DBInitConnection ( );
var sSurvey = "" + Request.Form ( "Survey" );
// only update the survey when no cookie
if ( "" == Request.Cookies ( sSurvey ) )
{
// get the data from the form and update the database
// use an enumerator to get name and value
var e = new Enumerator ( Request.Form );
while ( !e.atEnd ( ) )
{
var oItem = e.item();
// increment the current number of times this answer has been chosen
oConnection.Execute ( UPDATE SurveyAnswers SET Hits=Hits+1 WHERE Question=" + oItem + " AND
Answer=" + Request.Form ( oItem ) + "; );
e.moveNext ( );
}
// note that setting cookie here assumes we are buffering
// the Reponse.Writes – cookies must be set before any
// HTML is sent to the client
Response.Cookies ( sSurvey ) = "1";
// Im not setting the expires on the cookie, so itll go
// away when the browser is closed. I just wanted to stop
// the survey incrementing if the page refreshed.
}
// now display all the answers to the survey
Out ( <p>Thanks for taking part in our " + sSurvey + " survey! The answers that everyone has
given so far are shown below: );
// the last question we displayed
var sLast = "";
// get all the selected answers, sorted by question and hits
DBGetRecords ( SELECT SurveyAnswers.Question,Answer,Hits FROM SurveyAnswers INNER JOIN
SurveyQuestions ON SurveyQuestions.Question=SurveyAnswers.Question WHERE Survey=" + sSurvey + " AND
Hits>0 ORDER BY SurveyAnswers.Question,Hits DESC; );
var fScale;
while ( !oRecordSet.EOF )
{
// display question when it changes
var sIntQuestion = "" + oRecordSet ( 0 );
// slice off chars used for sorting
var sQuestion = sIntQuestion.slice ( 2 );
// get answer
var sIntAnswer = "" + oRecordSet ( 1 );
// slice off chars used for sorting
var sAnswer = ExpandMacros ( sIntAnswer.slice ( 2 ) );
var nReaders = oRecordSet ( 2 ) – 0;
if ( sQuestion != sLast )
{
Out ( <h5> + sQuestion + </h5> );
sLast = sQuestion;
Out ( <font color="red">" + sAnswer + " was the top answer ( + nReaders + readers)
</font><br> );
fScale = 300.0 / nReaders;
}
else
{
Out ( " + sAnswer + " was chosen by + nReaders + readers<br> );
}
Out ( <img src="images/Dot.gif" height="8" width=" + (nReaders * fScale) + "><br> );
oRecordSet.MoveNext ( );
}
// release the connection ASAP
DBReleaseConnection ( );
}
else
{
// some initial instructions
Out ( <p>There aren\t any important instructions when answering these questions – except you
don\t have to answer any. All are optional – if you don\t like a question, or none of the answers are
relevant, just move onto the next one! );
// connect to the database
DBInitConnection ( );
// get the questions from the database
DBGetRecords ( SELECT Question FROM SurveyQuestions WHERE Survey=" + sName + " ORDER BY
Question; );
if ( oRecordSet.EOF )
{
Out ( No questions were found for survey " + sName + "<p> );
return;
}
// store the questions in an array
var sIntQuestions = new Array;
var nQuestions = 0;
while ( !oRecordSet.EOF )
{
sIntQuestions [ nQuestions++ ] = "" + oRecordSet ( 0 );
oRecordSet.MoveNext ( );
}
Out ( <form action=" + Request.ServerVariables ( SCRIPT_NAME ) + " method="post"> );
// some hidden fields to pass data through to results page
Out ( <input type="hidden" name="Survey" value=" + sName + "> );
// now loop through the questions
for ( var nQuestion=0; nQuestion<nQuestions; nQuestion++ )
{
var sIntQuestion = sIntQuestions [ nQuestion ];
// slice off chars used for sorting
var sQuestion = sIntQuestion.slice ( 2 );
// get the answers from the database
DBGetRecords ( SELECT Answer,AnswerType FROM SurveyAnswers WHERE Question=" + sIntQuestion + "
ORDER BY Answer; );
Out ( <h5> + sQuestion + </h5> );
while ( !oRecordSet.EOF )
{
// get the answer
var sIntAnswer = "" + oRecordSet ( 0 );
// slice off chars used for sorting
var sAnswer = ExpandMacros ( sIntAnswer.slice ( 2 ) );
var sAnswerType= "" + oRecordSet ( 1 );
switch ( sAnswerType )
{
case radio:
Out ( <input type="radio" name=" + sIntQuestion + " value=" + sIntAnswer + "> +
sAnswer );
break;
default:
break;
}
Out ( <br> );
// get next answer
oRecordSet.MoveNext ( );
}
}
Out ( <p><input type="submit" value="Submit answers"> );
Out ( </form> );
// release the connection ASAP
DBReleaseConnection ( );
}
}
// ============================================
// add links to text where *? macros are found, e.g. *d expands to
// <a href="Donate.asp">Send a donation!</a>
// NOTE: currently assumes expansions are always at end of line
// ============================================
function ExpandMacros ( sText )
{
var sMacros = new Array (
**,
*d
);
var sExpansions = new Array (
<a href="Contact.asp" target="CYAEXternal">You need to send me feedback!</a>,
<a href="Donate.asp" target="CYAEXternal">send a donation!</a>
);
for ( var i=0; i<sMacros.length; i++ )
{
var nPos = sText.indexOf ( sMacros [ i ] );
if ( -1 != nPos )
{
sText = sText.slice ( 0, nPos ) + sExpansions [ i ];
break;
}
}
return sText;
}
%>
utils/Database.asp
<%
// ============================================
// NOTE: all source code downloaded from CoverYourASP was written by
// James Shaw (unless stated otherwise), and is copyright (c) 2000 by
// James Shaw. You may use this source code on your web sites, but
// please dont publish or distribute in any way.
//
// I would appreciate an HTML comment in any code you use, i.e.
// <!– portions (c) james@CoverYourASP.com–>
// (see Footer(), documented in SSI.asp for details on how to do this)
//
// <shameless plug>
// Please contact me to discuss any ASP contract work you may have.
// </shameless plug>
// ============================================
// globals
var oConnection;
var oRecordSet;
// enums
// Connection.State and Recordset.State property
var adStateClosed = 0; // the object is closed.
var adStateOpen = 1; // the object is open.
var adStateConnecting = 2; // the object is connecting.
var adStateExecuting = 4; // the object is executing a command.
var adStateFetching = 8; // the rows of the object are being fetched.
// Recordset.Cursor property
var adOpenUnspecified = -1; // does not specify the type of cursor.
var adOpenForwardOnly = 0; // (default) a forward-only cursor, i.e. you get only one pass thru the data!
var adOpenKeyset = 1; // can go in any direction, and as a bonus youll see changes other users
make. EXPENSIVE!
var adOpenDynamic = 2; // as Keyset, but also you can see additions/deletions other users make.
EXPENSIVE!
var adOpenStatic = 3; // can go in any direction, but read-only.
// Recordset.LockType property
var adLockUnspecified = -1; // does not specify a type of lock.
var adLockReadOnly = 1; // (default) guess!
var adLockPessimistic = 2; // guaranteed to work
var adLockOptimistic = 3; // records locked only when you call Update. fingers crossed
var adLockBatchOptimistic = 4;// required for batch update mode
// ============================================
// example usage:
// DBInitConnection ( );
//
// DBGetRecords ( "SELECT * FROM Somewhere" );
//
// …use oRecordSet
//
// DBReleaseRecords ( ); // optional step
//
// DBGetRecords ( "SELECT * FROM SomewhereElse" );
//
// …use oRecordSet
//
// DBReleaseRecords ( ); // optional step
//
// DBReleaseConnection ( );
// ============================================
// ============================================
// initializes database variables for first use on page – leave it to the
// last possible second before calling this function
// ============================================
function DBInitConnection ( )
{
// dont open it again if already opened!
if ( oConnection != undefined )
return;
// you can open Recordset objects without a Connection object, but
// its far less efficient if you are opening multiple Recordsets.
//
// if you dont create a Connection object ADO creates a new one for
// each new Recordset.Open, even if you use the same connection string.
oConnection = Server.CreateObject( ADODB.Connection );
// open the database – use MapPath to make relative path into physical path
// NOTE: keep your database path a secret – nasty people are everywhere!
// 2. change the 4.0 to 3.51 when using Access 97
oConnection.Open( Provider=Microsoft.Jet. + sDBDriver + ; Data Source= + Server.MapPath (
sDBPath ) );
// create a Recordset
oRecordSet = Server.CreateObject( ADODB.Recordset );
}
// ============================================
// tidies up after DBInitConnection
// ============================================
function DBReleaseConnection ( )
{
// dont release the connection if not connected!
if ( oConnection == undefined )
return;
// close and delete the Recordset object
DBReleaseRecords ( );
oRecordSet = undefined;
// Dont call Close if the Recordset failed to Open properly, i.e. its
// State is still adStateClosed (0)
if ( oConnection.State != adStateClosed )
oConnection.Close();
oConnection = undefined;
}
// ============================================
// executes the passed in SQL statement and returns a read-only
// forward-only oRecordSet object
// ============================================
function DBGetRecords ( sSQL )
{
// if the Recordset is already open, close it
DBReleaseRecords ( );
// we could use oRecordSet = oConnection.Execute( sSQL ) here
// but then we will always get back a read-only, forward-only cursor.
// (admittedly this is the most used type, but still)
// use oRecordSet.Open and we have far more control. For details
// read the definitions of the enums at the top of this file.
// remember that this can fail if passed garbage, and hence the
// Recordset will remain closed, State == adStateClosed
oRecordSet.Open ( sSQL, oConnection, adOpenForwardOnly, adLockReadOnly );
}
// ============================================
// tidies up after DBGetRecords
// ============================================
function DBReleaseRecords ( )
{
// when you have finished with an open Recordset object, call the
// Close method to release its resources. You can call Open again.
// Dont call Close if the Recordset failed to Open properly, i.e. its
// State is still adStateClosed
if ( oRecordSet != undefined && oRecordSet.State != adStateClosed )
oRecordSet.Close();
}
%>
