[CODE4LIB] Position Available for Technology Librarian (San Diego, CA)

[Patty De Anda]

LAC seeks a Technology Librarian for our client in San Diego, CA. The
Librarian will be developing and maintaining databases and applications,
integrating current and future systems and maintaining and trouble
shooting technical aspects of library information tools. Their main
responsibility will be to provide technical expertise in delivering
information to a global internal client base. Our ideal candidate must
be proactive in their approach and be customer service oriented.
Relocation assistance is provided (please inquire with recruiter for
more details).

 

Qualifications

 

*   MLS from ALA accredited library school OR Bachelor's degree AND
3-5 years library experience with progressively responsible positions,
or equivalent experience;

*   Experience with electronic resource management systems or
digital library implementations; 
*   Collection, analysis and presentation of library metrics; 
*   Quality control of online cataloging; 
*   Streamlining library systems and procedures;
*   Troubleshooting problems with systems and electronic services;
*   Anticipating and optimizing the use of new/emerging information
technologies, including electronic access and desktop delivery;
*   Experience with access methods such as IP authentication, proxy
servers, Shibboleth (Internet 2), and IP library address management and
password management;
*   Experience with link resolver tools and methods;
*   Familiarity with as many of the following as possible: Microsoft
Excel, Microsoft Word, Cuadra STAR, Filemaker Pro, Oracle, and/or
Microsoft Access, HTML, ASP, Windows 2000, XML;
*   Experience and understanding of the licensing and purchasing of
informational content and tools;
*   Must have strong analytical/problem-solving skills and attention
to detail;
*   Must be proficient using spreadsheet and word-processing
software;
*   Must have strong interpersonal skills and be customer service
oriented;
*   Strong written and verbal communication;
*   Must have a proactive and extroverted approach;
*   The ability to manage change and respond enthusiastically to
challenges is also essential.

 

To Apply

 

*   Please email resume, cover letter, and salary expectation to
Patty De ANda, [EMAIL PROTECTED], with a courtesy copy to
Keith Gurtzweiler, [EMAIL PROTECTED] 
*   Please include the job title as the subject line of your email.
*   EOE

 

 

 

 

Patty De Anda

Communications Coordinator

Library Associates Companies

 

8383 Wilshire Boulevard, Suite 355
Beverly Hills, CA 90211
800 987 6794 toll free
323 302 9439 local
323 852 1093 fax
www.libraryassociates.com
http://www.libraryassociates.com/> 
[EMAIL PROTECTED]  

 

The information contained in this e-mail message is privileged,
confidential, and protected from disclosure. If you are not the intended
recipient, any dissemination or copying is strictly prohibited. If you
think that you have received this e-mail message in error, please e-mail
the sender.

 

Re: [CODE4LIB] httpRequest javascript.... grrr [resolved]

[pkeane]

Indeed, my proposed fix was incorrect -- an alert does NOT need to be
passed into the function as a callback (it's always globally available)
and since the parameter for the alert is response text, that's A-OK.  If
you want to insert that response into the page (and not just 'alert' it),
you WOULD need to create a callback function which made reference to the
page element 'target' (thus serving as a closure).

One thing about XHR -- you have all four HTTP verbs at your disposal: GET,
POST, PUT, DELETE and so you may wish to use one of the non-safe (i.e.
state-changing) methods for your XHR call (probably POST in the case of
adding a tag) to make things more RESTful.  XHR is actually a very good
way to "hijack" links (which are otherwise going to simply use 'GET')
which will perform state-changing operations.  Then when your application
starts exposing web services, you'll be that much more aligned with
RESTful principles (I'm convinced that's v. important, although plenty of
successful services expose unsafe GETs).  Just a thought...

best-
Peter Keane


On Thu, 29 Nov 2007, Eric Lease Morgan wrote:



On Nov 29, 2007, at 9:21 AM, Eric Lease Morgan wrote:


Why doesn't my httpRequest Javascript function return unless I add
an alert? Grrr.



I have resolved my problem, but I'm not exactly sure how.

First of all, my httpRequest (XMLHttpRequest) code was just fine. I
made no significant changes to it. Instead, I separated my form input/
validation routine from the httpRequest functionality and the problem
disappeared. Don't ask my why. I don't know.  This makes for better
modular programing though.  javascript--

BTW, I appreciate the links to various Javascript libraries, but
since I am really only starting out in this regard I think I need to
get my hands dirtier before I lean on someone else's code.

Finally, for posterity's sake, I have included my resulting code in
an attachment to this message. I don't know whether or not the list
will accept attachments.

--
Eric Lease Morgan
University Libraries of Notre Dame

(574) 631-8604

Re: [CODE4LIB] httpRequest javascript.... grrr [resolved]

[Eric Lease Morgan]

On Nov 29, 2007, at 9:21 AM, Eric Lease Morgan wrote:


Why doesn't my httpRequest Javascript function return unless I add
an alert? Grrr.



I have resolved my problem, but I'm not exactly sure how.

First of all, my httpRequest (XMLHttpRequest) code was just fine. I
made no significant changes to it. Instead, I separated my form input/
validation routine from the httpRequest functionality and the problem
disappeared. Don't ask my why. I don't know.  This makes for better
modular programing though.  javascript--

BTW, I appreciate the links to various Javascript libraries, but
since I am really only starting out in this regard I think I need to
get my hands dirtier before I lean on someone else's code.

Finally, for posterity's sake, I have included my resulting code in
an attachment to this message. I don't know whether or not the list
will accept attachments.

--
Eric Lease Morgan
University Libraries of Notre Dame

(574) 631-8604


function add_tag( theform ) {

 // get the form's input
 var resource = theform.resource.value;
 var tag  = theform.tag.value;
 var username = theform.username.value;

 // process the input
 post_tag ( resource, tag, username );

 // cleanup and done
 expand( 'd' + resource );
 return false;

}


function post_tag( resource, tag, username ) {

 // use the input to create a GET request
 var url = './index.cgi?cmd=post_tag&resource=' + resource + '&tag=' + tag + 
'&username=' + username;

 // create a xmlRequest
 var xmlRequest;
 if ( window.XMLHttpRequest ) { xmlRequest = new XMLHttpRequest(); }
 else if ( window.ActiveXObject ) { xmlRequest = new ActiveXObject( 
"Microsoft.XMLHTTP" ); }

 // sanity check
 if ( !xmlRequest ) {

  alert( 'Giving up: Cannot create an XMLHTTP instance' );
  return false;

 }

 // give the xmlRequest some characteristics and send it off
 xmlRequest.open( 'GET', url, true );
 xmlRequest.send( null );
 xmlRequest.onreadystatechange = function() {

  if ( xmlRequest.readyState == 4 ) {

   var xmldoc = xmlRequest.responseXML;
   var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
   alert ( root_node.firstChild.data );

  }

 }

}


function expand( id ) {

 var details = document.getElementById( id );
 details.style.display = ( details.style.display == 'block' ) ? 'none' : 
'block';

}

Re: [CODE4LIB] httpRequest javascript.... grrr

[pkeane]

I'd highly recommend getting a good clear handle on the underlying
javascript workings before moving to a library like jQuery (which I am
quite fond of) especially when using XMLHTTPRequest.  If you don't,
mysterious problems may arise that are all the more difficult to debug
since you have the library between you and the executed javascript.

I find that the most common problems with XHR are quite often due to it's
asynchronous behavior.  You cannot simply invoke a function within the
response code and expect to have it fire, because the code has no way of
knowing when/if that response will occur.  You need to instead create a
"callback" function that you pass into the response code (like you are
accustomed to doing when setting an event handler).

I am not 100% sure if that's the problem here, but I would try this:

before defining httpRequest.onreadystatechange, define:

callback_alert = function(msg) { alert(msg); };

then:

httpRequest.onreadtstatechange = function(callback_alert) {
[...]
callback_alert ( root_node.firstChild.data );
 }

The problem is that your anonymous function onreadystatechage is
effectively "compiled" to run later, but the alert function becomes a
"closure" which remembers its compilation state when invoked.  And at the
time of its compilation, xmldoc did not exist.

One thing I WOULD recommend it to study some of the libraries to see how
they construct their XHR code.

Here's my standard XHR:

Dase.ajax = function(url,my_func) {
var xmlhttp = Dase.createXMLHttpRequest();
xmlhttp.open('GET', url, true);
xmlhttp.send(null);
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var returnStr = xmlhttp.responseText;
if (my_func) {
my_func(returnStr);
}
} else {
// wait for the call to complete
}
};
};

Note that I always pass in a (callback) function to do what needs doing
to the response code.

I hope that helps-
Peter Keane
daseproject.org


On Thu, 29 Nov 2007, Eric Lease Morgan wrote:


Why doesn't my httpRequest Javascript function return unless I add an
alert? Grrr.

I am writing my first AJAX-y function called add_tag. This is how it
is suppose to work:

1. define a username
2. create an httpRequest object
3. define what it is suppose to happen when it gets a response
4. open a connection to the server
5. send the request

When the response it is complete is simply echos the username. I know
the remote CGI script works because the following URL works correctly:

http://mylibrary.library.nd.edu/demos/tagging/?
cmd=add_tag&username=fkilgour

My Javascript is below, and it works IF I retain the "alert
( 'Grrr!' )" line. Once I take the alert out of the picture I get a
Javascript error "xmldoc has no properties". Here's my code:


function add_tag() {

 // define username
 var username  = 'fkilgour';

 // create an httpRequest
 var httpRequest;
 if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
 else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
( "Microsoft.XMLHTTP" ); }

 // give the httpRequest some characteristics and send it off
 httpRequest.onreadystatechange = function() {

  if ( httpRequest.readyState == 4 ) {

   var xmldoc = httpRequest.responseXML;
   var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
   alert ( root_node.firstChild.data );

  }

 };

 httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
username, true );
 httpRequest.send( '' );
 alert ( 'Grrr!' );

}


What am I doing wrong? Why do I seem to need a pause at the end of my
add_tag function? I know the anonymous function -- function() -- is
getting executed because I can insert other httpRequest.readyState
checks into the function and they return. Grrr.

--
Eric Lease Morgan
University Libraries of Notre Dame

(574) 631-8604

Re: [CODE4LIB] httpRequest javascript.... grrr

[Nathan Vack]

Disclaimer: I'm a prototype / scriptaculous / lowpro junkie.

My big caution with all of these frameworks is the same as... well,
the caution you get whenever moving to a technology with a higher
level of abstraction: it doesn't totally save you from knowing about
the underlying tech. If you don't know how XmlHTTPRequest (or DOM
manipulation or events or javascript's peculiar object model)
*works*, then going beyond what the libraries give you for free is
gonna be hard.

That being said... if you try to write your own cross-browser event
code today, you are a fool ;-)

I *heartily* recommend source diving in these libraries. Seeing how
experts code js has been immensely helpful for me -- just as crawling
through ActiveRecord has been invaluable in learning ruby.

-Nate

On Nov 29, 2007, at 10:33 AM, Keith Jenkins wrote:


jQuery++

I like to do things from scratch, but have never regretted moving to
jQuery.  Whatever time it takes you to check it out will be paid back
a thousand times, at least.

Keith


On 11/29/07, Ewout Van Troostenberghe <[EMAIL PROTECTED]> wrote:

To point out why the use of a Javascript framework is important,
let me
put your code into jQuery (http://jquery.com)

$.get('index.cgi', {cmd:'add_tag', username:'username'}, function
(html) {
  // do whatever you want here
})

Re: [CODE4LIB] httpRequest javascript.... grrr

[Andrew Nagy]

Don't leave out the Yahoo YUI library as something to consider.  Whats nice is 
that you don't have to load the entire library as one big huge js file - you 
can pick and choose what libraries you want to include in your page minimizing 
the javascript filesize.  If you want to have one little js widget on you page 
- the browser doesn't need to download and process a 150kb prototype js file.

Andrew

> -Original Message-
> From: Code for Libraries [mailto:[EMAIL PROTECTED] On Behalf Of
> Jonathan Rochkind
> Sent: Thursday, November 29, 2007 10:24 AM
> To: CODE4LIB@listserv.nd.edu
> Subject: Re: [CODE4LIB] httpRequest javascript grrr
>
> These days I think jquery seems more generally popular than prototype.
> But both are options. I definitely would use one or the other, instead
> of doing it myself from scratch. They take care of a lot of weird
> cross-browser-compatibility stuff, among other conveniences.
>
> Jonathan
>
> Jesse Prabawa wrote:
> > Hi Eric,
> >
> > Have you considered using a Javascript Library to handle these
> details? I
> > would recommend that you refactor your code to use one so that you
> can
> > concentrate on what you actually want to do instead. This way you can
> also
> > avoid having browser incompatabilities that are already solved if you
> use a
> > Javascript Library. Try checking out Prototype at
> > http://www.prototypejs.org/
> >
> > Best regards,
> >
> > Jesse
> >
> > On Nov 29, 2007 10:21 PM, Eric Lease Morgan <[EMAIL PROTECTED]> wrote:
> >
> >
> >> Why doesn't my httpRequest Javascript function return unless I add
> an
> >> alert? Grrr.
> >>
> >> I am writing my first AJAX-y function called add_tag. This is how it
> >> is suppose to work:
> >>
> >>   1. define a username
> >>   2. create an httpRequest object
> >>   3. define what it is suppose to happen when it gets a response
> >>   4. open a connection to the server
> >>   5. send the request
> >>
> >> When the response it is complete is simply echos the username. I
> know
> >> the remote CGI script works because the following URL works
> correctly:
> >>
> >>   http://mylibrary.library.nd.edu/demos/tagging/?
> >> cmd=add_tag&username=fkilgour
> >>
> >> My Javascript is below, and it works IF I retain the "alert
> >> ( 'Grrr!' )" line. Once I take the alert out of the picture I get a
> >> Javascript error "xmldoc has no properties". Here's my code:
> >>
> >>
> >>   function add_tag() {
> >>
> >>// define username
> >>var username  = 'fkilgour';
> >>
> >>// create an httpRequest
> >>var httpRequest;
> >>if ( window.XMLHttpRequest ) { httpRequest = new
> XMLHttpRequest(); }
> >>else if ( window.ActiveXObject ) { httpRequest = new
> ActiveXObject
> >> ( "Microsoft.XMLHTTP" ); }
> >>
> >>// give the httpRequest some characteristics and send it off
> >>httpRequest.onreadystatechange = function() {
> >>
> >> if ( httpRequest.readyState == 4 ) {
> >>
> >>  var xmldoc = httpRequest.responseXML;
> >>  var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0
> );
> >>  alert ( root_node.firstChild.data );
> >>
> >> }
> >>
> >>};
> >>
> >>httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
> >> username, true );
> >>httpRequest.send( '' );
> >>alert ( 'Grrr!' );
> >>
> >>   }
> >>
> >>
> >> What am I doing wrong? Why do I seem to need a pause at the end of
> my
> >> add_tag function? I know the anonymous function -- function() -- is
> >> getting executed because I can insert other httpRequest.readyState
> >> checks into the function and they return. Grrr.
> >>
> >> --
> >> Eric Lease Morgan
> >> University Libraries of Notre Dame
> >>
> >> (574) 631-8604
> >>
> >>
> >
> >
>
> --
> Jonathan Rochkind
> Digital Services Software Engineer
> The Sheridan Libraries
> Johns Hopkins University
> 410.516.8886
> rochkind (at) jhu.edu

Re: [CODE4LIB] Access 2007 summary

[Tom Keays]

Excellent. Will the presentations be done up as MP3 as they've been in
previous years? Last year, both slides and mp3 links were posted on
the Access 2006 homepage

http://www.access2006.uottawa.ca/index.php?page_id=10

and made available as a podcast via Odeo.

http://odeo.com/channel/140930/view

Tom

On 11/29/07, Patrick M. Lozeau <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Some presetation slides are available here:
>
> http://access2007.uvic.ca/?page_id=18
>
> And videos here:
>
> http://video.google.com/videosearch?q=%22access+2007+conference%22&sitesearch=
>
>
> (Links were taken from the Access 2007 Facebook group.)
>
> Patrick M. Lozeau
> MIS student
> EBSI - Université de Montréal
> _
>
> On Nov 28, 2007 5:52 PM, Andrew Nagy <[EMAIL PROTECTED]> wrote:
>
> > Does anyone know of or have an in-depth review of the access 2007
> > conference.  Was there video captured?  I was unable to attend - but wanted
> > to check it out this year.
> >
> > Thanks
> > Andrew
> >
>

Re: [CODE4LIB] httpRequest javascript.... grrr

[Keith Jenkins]

jQuery++

I like to do things from scratch, but have never regretted moving to
jQuery.  Whatever time it takes you to check it out will be paid back
a thousand times, at least.

Keith


On 11/29/07, Ewout Van Troostenberghe <[EMAIL PROTECTED]> wrote:
> To point out why the use of a Javascript framework is important, let me
> put your code into jQuery (http://jquery.com)
>
> $.get('index.cgi', {cmd:'add_tag', username:'username'}, function(html) {
>   // do whatever you want here
> })

Re: [CODE4LIB] httpRequest javascript.... grrr

[Jonathan Rochkind]

These days I think jquery seems more generally popular than prototype.
But both are options. I definitely would use one or the other, instead
of doing it myself from scratch. They take care of a lot of weird
cross-browser-compatibility stuff, among other conveniences.

Jonathan

Jesse Prabawa wrote:

Hi Eric,

Have you considered using a Javascript Library to handle these details? I
would recommend that you refactor your code to use one so that you can
concentrate on what you actually want to do instead. This way you can also
avoid having browser incompatabilities that are already solved if you use a
Javascript Library. Try checking out Prototype at
http://www.prototypejs.org/

Best regards,

Jesse

On Nov 29, 2007 10:21 PM, Eric Lease Morgan <[EMAIL PROTECTED]> wrote:



Why doesn't my httpRequest Javascript function return unless I add an
alert? Grrr.

I am writing my first AJAX-y function called add_tag. This is how it
is suppose to work:

  1. define a username
  2. create an httpRequest object
  3. define what it is suppose to happen when it gets a response
  4. open a connection to the server
  5. send the request

When the response it is complete is simply echos the username. I know
the remote CGI script works because the following URL works correctly:

  http://mylibrary.library.nd.edu/demos/tagging/?
cmd=add_tag&username=fkilgour

My Javascript is below, and it works IF I retain the "alert
( 'Grrr!' )" line. Once I take the alert out of the picture I get a
Javascript error "xmldoc has no properties". Here's my code:


  function add_tag() {

   // define username
   var username  = 'fkilgour';

   // create an httpRequest
   var httpRequest;
   if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
   else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
( "Microsoft.XMLHTTP" ); }

   // give the httpRequest some characteristics and send it off
   httpRequest.onreadystatechange = function() {

if ( httpRequest.readyState == 4 ) {

 var xmldoc = httpRequest.responseXML;
 var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
 alert ( root_node.firstChild.data );

}

   };

   httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
username, true );
   httpRequest.send( '' );
   alert ( 'Grrr!' );

  }


What am I doing wrong? Why do I seem to need a pause at the end of my
add_tag function? I know the anonymous function -- function() -- is
getting executed because I can insert other httpRequest.readyState
checks into the function and they return. Grrr.

--
Eric Lease Morgan
University Libraries of Notre Dame

(574) 631-8604







--
Jonathan Rochkind
Digital Services Software Engineer
The Sheridan Libraries
Johns Hopkins University
410.516.8886
rochkind (at) jhu.edu

Re: [CODE4LIB] httpRequest javascript.... grrr

[Ewout Van Troostenberghe]

To point out why the use of a Javascript framework is important, let me
put your code into jQuery (http://jquery.com)

$.get('index.cgi', {cmd:'add_tag', username:'username'}, function(html) {
  // do whatever you want here
})

PrototypeJS has a similar, easy to use construct. In the end, using any
framework is more important than the specific choice of framework.

>Why doesn't my httpRequest Javascript function return unless I add an
>alert? Grrr.
>
>I am writing my first AJAX-y function called add_tag. This is how it
>is suppose to work:
>
>   1. define a username
>   2. create an httpRequest object
>   3. define what it is suppose to happen when it gets a response
>   4. open a connection to the server
>   5. send the request
>
>When the response it is complete is simply echos the username. I know
>the remote CGI script works because the following URL works correctly:
>
>   http://mylibrary.library.nd.edu/demos/tagging/?
>cmd=add_tag&username=fkilgour
>
>My Javascript is below, and it works IF I retain the "alert
>( 'Grrr!' )" line. Once I take the alert out of the picture I get a
>Javascript error "xmldoc has no properties". Here's my code:
>
>
>   function add_tag() {
>
>// define username
>var username  = 'fkilgour';
>
>// create an httpRequest
>var httpRequest;
>if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
>else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
>( "Microsoft.XMLHTTP" ); }
>
>// give the httpRequest some characteristics and send it off
>httpRequest.onreadystatechange = function() {
>
> if ( httpRequest.readyState == 4 ) {
>
>  var xmldoc = httpRequest.responseXML;
>  var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
>  alert ( root_node.firstChild.data );
>
> }
>
>};
>
>httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
>username, true );
>httpRequest.send( '' );
>alert ( 'Grrr!' );
>
>   }
>
>
>What am I doing wrong? Why do I seem to need a pause at the end of my
>add_tag function? I know the anonymous function -- function() -- is
>getting executed because I can insert other httpRequest.readyState
>checks into the function and they return. Grrr.
>
>--
>Eric Lease Morgan
>University Libraries of Notre Dame
>
>(574) 631-8604

Re: [CODE4LIB] httpRequest javascript.... grrr

[Godmar Back]

You're using IE, which means you need to issue the open() before
adding the onreadystatechange handler.
Otherwise, open will trigger a call to your handler, and IE's
implementation won't have reset the readyState to 0.

In either event, you should double-check that the status of the
request is 200 before accessing the result.

 - Godmar

On Nov 29, 2007 9:21 AM, Eric Lease Morgan <[EMAIL PROTECTED]> wrote:
> Why doesn't my httpRequest Javascript function return unless I add an
> alert? Grrr.
>
> I am writing my first AJAX-y function called add_tag. This is how it
> is suppose to work:
>
>1. define a username
>2. create an httpRequest object
>3. define what it is suppose to happen when it gets a response
>4. open a connection to the server
>5. send the request
>
> When the response it is complete is simply echos the username. I know
> the remote CGI script works because the following URL works correctly:
>
>http://mylibrary.library.nd.edu/demos/tagging/?
> cmd=add_tag&username=fkilgour
>
> My Javascript is below, and it works IF I retain the "alert
> ( 'Grrr!' )" line. Once I take the alert out of the picture I get a
> Javascript error "xmldoc has no properties". Here's my code:
>
>
>function add_tag() {
>
> // define username
> var username  = 'fkilgour';
>
> // create an httpRequest
> var httpRequest;
> if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
> else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
> ( "Microsoft.XMLHTTP" ); }
>
> // give the httpRequest some characteristics and send it off
> httpRequest.onreadystatechange = function() {
>
>  if ( httpRequest.readyState == 4 ) {
>
>   var xmldoc = httpRequest.responseXML;
>   var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
>   alert ( root_node.firstChild.data );
>
>  }
>
> };
>
> httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
> username, true );
> httpRequest.send( '' );
> alert ( 'Grrr!' );
>
>}
>
>
> What am I doing wrong? Why do I seem to need a pause at the end of my
> add_tag function? I know the anonymous function -- function() -- is
> getting executed because I can insert other httpRequest.readyState
> checks into the function and they return. Grrr.
>
> --
> Eric Lease Morgan
> University Libraries of Notre Dame
>
> (574) 631-8604
>

Re: [CODE4LIB] httpRequest javascript.... grrr

[Jesse Prabawa]

Hi Eric,

Have you considered using a Javascript Library to handle these details? I
would recommend that you refactor your code to use one so that you can
concentrate on what you actually want to do instead. This way you can also
avoid having browser incompatabilities that are already solved if you use a
Javascript Library. Try checking out Prototype at
http://www.prototypejs.org/

Best regards,

Jesse

On Nov 29, 2007 10:21 PM, Eric Lease Morgan <[EMAIL PROTECTED]> wrote:

> Why doesn't my httpRequest Javascript function return unless I add an
> alert? Grrr.
>
> I am writing my first AJAX-y function called add_tag. This is how it
> is suppose to work:
>
>   1. define a username
>   2. create an httpRequest object
>   3. define what it is suppose to happen when it gets a response
>   4. open a connection to the server
>   5. send the request
>
> When the response it is complete is simply echos the username. I know
> the remote CGI script works because the following URL works correctly:
>
>   http://mylibrary.library.nd.edu/demos/tagging/?
> cmd=add_tag&username=fkilgour
>
> My Javascript is below, and it works IF I retain the "alert
> ( 'Grrr!' )" line. Once I take the alert out of the picture I get a
> Javascript error "xmldoc has no properties". Here's my code:
>
>
>   function add_tag() {
>
>// define username
>var username  = 'fkilgour';
>
>// create an httpRequest
>var httpRequest;
>if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
>else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
> ( "Microsoft.XMLHTTP" ); }
>
>// give the httpRequest some characteristics and send it off
>httpRequest.onreadystatechange = function() {
>
> if ( httpRequest.readyState == 4 ) {
>
>  var xmldoc = httpRequest.responseXML;
>  var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
>  alert ( root_node.firstChild.data );
>
> }
>
>};
>
>httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
> username, true );
>httpRequest.send( '' );
>alert ( 'Grrr!' );
>
>   }
>
>
> What am I doing wrong? Why do I seem to need a pause at the end of my
> add_tag function? I know the anonymous function -- function() -- is
> getting executed because I can insert other httpRequest.readyState
> checks into the function and they return. Grrr.
>
> --
> Eric Lease Morgan
> University Libraries of Notre Dame
>
> (574) 631-8604
>

Re: [CODE4LIB] httpRequest javascript.... grrr

[Andrew Nagy]

Eric - Have a look at some of the ajax functions I wronte for VuFind - there 
are some almost identical function calls that work just fine.
http://vufind.svn.sourceforge.net/viewvc/*checkout*/vufind/web/services/Record/ajax.js?revision=106
See function SaveTag

Also - You might want to consider using the Yahoo YUI Connection Manager or the 
Prototype AJAX toolkit.  They both work great and you don't need to spend time 
debugging.  I also find firebug (firefox plugin) to be an awesome ajax debugger.

Just by looking at your function real quick - you are calling 
httpRequest.send('') at the end of your function.  I think I read somewhere 
that you should send null and not an empty string.  Maybe that will solve it?  
Not really sure.


Andrew

> -Original Message-
> From: Code for Libraries [mailto:[EMAIL PROTECTED] On Behalf Of
> Eric Lease Morgan
> Sent: Thursday, November 29, 2007 9:22 AM
> To: CODE4LIB@listserv.nd.edu
> Subject: [CODE4LIB] httpRequest javascript grrr
>
> Why doesn't my httpRequest Javascript function return unless I add an
> alert? Grrr.
>
> I am writing my first AJAX-y function called add_tag. This is how it
> is suppose to work:
>
>1. define a username
>2. create an httpRequest object
>3. define what it is suppose to happen when it gets a response
>4. open a connection to the server
>5. send the request
>
> When the response it is complete is simply echos the username. I know
> the remote CGI script works because the following URL works correctly:
>
>http://mylibrary.library.nd.edu/demos/tagging/?
> cmd=add_tag&username=fkilgour
>
> My Javascript is below, and it works IF I retain the "alert
> ( 'Grrr!' )" line. Once I take the alert out of the picture I get a
> Javascript error "xmldoc has no properties". Here's my code:
>
>
>function add_tag() {
>
> // define username
> var username  = 'fkilgour';
>
> // create an httpRequest
> var httpRequest;
> if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest();
> }
> else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
> ( "Microsoft.XMLHTTP" ); }
>
> // give the httpRequest some characteristics and send it off
> httpRequest.onreadystatechange = function() {
>
>  if ( httpRequest.readyState == 4 ) {
>
>   var xmldoc = httpRequest.responseXML;
>   var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
>   alert ( root_node.firstChild.data );
>
>  }
>
> };
>
> httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
> username, true );
> httpRequest.send( '' );
> alert ( 'Grrr!' );
>
>}
>
>
> What am I doing wrong? Why do I seem to need a pause at the end of my
> add_tag function? I know the anonymous function -- function() -- is
> getting executed because I can insert other httpRequest.readyState
> checks into the function and they return. Grrr.
>
> --
> Eric Lease Morgan
> University Libraries of Notre Dame
>
> (574) 631-8604

[CODE4LIB] httpRequest javascript.... grrr

[Eric Lease Morgan]

Why doesn't my httpRequest Javascript function return unless I add an
alert? Grrr.

I am writing my first AJAX-y function called add_tag. This is how it
is suppose to work:

  1. define a username
  2. create an httpRequest object
  3. define what it is suppose to happen when it gets a response
  4. open a connection to the server
  5. send the request

When the response it is complete is simply echos the username. I know
the remote CGI script works because the following URL works correctly:

  http://mylibrary.library.nd.edu/demos/tagging/?
cmd=add_tag&username=fkilgour

My Javascript is below, and it works IF I retain the "alert
( 'Grrr!' )" line. Once I take the alert out of the picture I get a
Javascript error "xmldoc has no properties". Here's my code:


  function add_tag() {

   // define username
   var username  = 'fkilgour';

   // create an httpRequest
   var httpRequest;
   if ( window.XMLHttpRequest ) { httpRequest = new XMLHttpRequest(); }
   else if ( window.ActiveXObject ) { httpRequest = new ActiveXObject
( "Microsoft.XMLHTTP" ); }

   // give the httpRequest some characteristics and send it off
   httpRequest.onreadystatechange = function() {

if ( httpRequest.readyState == 4 ) {

 var xmldoc = httpRequest.responseXML;
 var root_node = xmldoc.getElementsByTagName( 'root' ).item( 0 );
 alert ( root_node.firstChild.data );

}

   };

   httpRequest.open( 'GET', './index.cgi?cmd=add_tag&username=' +
username, true );
   httpRequest.send( '' );
   alert ( 'Grrr!' );

  }


What am I doing wrong? Why do I seem to need a pause at the end of my
add_tag function? I know the anonymous function -- function() -- is
getting executed because I can insert other httpRequest.readyState
checks into the function and they return. Grrr.

--
Eric Lease Morgan
University Libraries of Notre Dame

(574) 631-8604

Re: [CODE4LIB] Access 2007 summary

[Birkin James Diana]

Andrew,


Does anyone know of or have an in-depth review of the access 2007
conference...


The Kansas State crew blogged the conference; it's terrific and
comprehensive.

http://ksulib.typepad.com/conferences/access07/index.html

-Birkin

---
Birkin James Diana
Programmer, Integrated Technology Services
Brown University Library
[EMAIL PROTECTED]

Re: [CODE4LIB] Access 2007 summary

[Pearson Dana]

I found this posted somewhere.

http://tinyurl.com/2pdcxh

I watched Tennant's interesing
discussion of WorldCat Grid and
planned to view others available.

dana
[EMAIL PROTECTED]

--- Andrew Nagy <[EMAIL PROTECTED]> wrote:

> Does anyone know of or have an in-depth review of
> the access 2007 conference.  Was there video
> captured?  I was unable to attend - but wanted to
> check it out this year.
>
> Thanks
> Andrew
>



  

Be a better pen pal.
Text or chat with friends inside Yahoo! Mail. See how.  
http://overview.mail.yahoo.com/

Re: [CODE4LIB] Access 2007 summary

[Patrick M. Lozeau]

Hi,

Some presetation slides are available here:

http://access2007.uvic.ca/?page_id=18

And videos here:

http://video.google.com/videosearch?q=%22access+2007+conference%22&sitesearch=


(Links were taken from the Access 2007 Facebook group.)

Patrick M. Lozeau
MIS student
EBSI - Université de Montréal
_

On Nov 28, 2007 5:52 PM, Andrew Nagy <[EMAIL PROTECTED]> wrote:

> Does anyone know of or have an in-depth review of the access 2007
> conference.  Was there video captured?  I was unable to attend - but wanted
> to check it out this year.
>
> Thanks
> Andrew
>