Comments on: Using Ajax to Count Clicks http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/ Sat, 05 Jul 2008 10:02:49 +0000 http://wordpress.org/?v=2.5.1 By: Thom Wetzel http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-15358 Thom Wetzel Mon, 03 Mar 2008 00:40:22 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-15358 Pablo : Thanks for your comments. I'll have to update my stuff to take your notes into account. One thing that I'm doing is remembering the last IP address that clicks each link, so double-clicks (quadruple, octa-click or whatever) are ignored. Pablo : Thanks for your comments.

I’ll have to update my stuff to take your notes into account.

One thing that I’m doing is remembering the last IP address that clicks each link, so double-clicks (quadruple, octa-click or whatever) are ignored.

]]> By: Pablo http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-13114 Pablo Tue, 08 Jan 2008 16:27:24 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-13114 It is also very important to disable caching for the called url, otherwise the browser can take the request response from local memory without really executing the request. as found on php.net we can use: header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past It is also very important to disable caching for the called url, otherwise the browser can take the request response from local memory without really executing the request.

as found on php.net we can use:
header(”Cache-Control: no-cache, must-revalidate”); // HTTP/1.1
header(”Expires: Mon, 26 Jul 1997 05:00:00 GMT”); // Date in the past

]]> By: Pablo http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-13113 Pablo Tue, 08 Jan 2008 16:13:37 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-13113 When the 3rd parameter sets the request to be run asynchornously req.open(”GET”, url, true); I ve encountered difficulties when the page was reloaded before the request was done, so this click was "ignored". Changing it to false should solve the issue. Also, maybe it's useful to point out that if user makes a double (or quadruple or whatever ) click on the link, the request will be executed twice (or four times and so on). When the 3rd parameter sets the request to be run asynchornously
req.open(”GET”, url, true);
I ve encountered difficulties when the page was reloaded before the request was done, so this click was “ignored”. Changing it to false should solve the issue.

Also, maybe it’s useful to point out that if user makes a double (or quadruple or whatever ) click on the link, the request will be executed twice (or four times and so on).

]]> By: nikki http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-6532 nikki Sat, 04 Aug 2007 13:24:24 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-6532 try your code, it not working, error object expected, where can i download to test. try your code, it not working, error object expected, where can i download to test.

]]> By: Thom Wetzel http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-5225 Thom Wetzel Mon, 16 Jul 2007 14:57:21 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-5225 @ Joshua Read the section titled "Lousy Links". To search engines, all the links point to www.lmnopc.com -- not the actual site that the text describes, so it looks like none of the links lead to good content. Using this method, the links actually point to the content they describe. @ Beeuser Search engine crawlers don’t use Javascript, so they won’t be triggering the script. @ Joshua

Read the section titled “Lousy Links”. To search engines, all the links point to http://www.lmnopc.com — not the actual site that the text describes, so it looks like none of the links lead to good content. Using this method, the links actually point to the content they describe.

@ Beeuser

Search engine crawlers don’t use Javascript, so they won’t be triggering the script.

]]> By: beeuser http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-3203 beeuser Fri, 08 Jun 2007 08:24:22 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-3203 Hello, nice solution. I will use it in the future. I have one question. How do you know which visitor is a search engine, cause I don't want to count clicks of search engines? Hello, nice solution. I will use it in the future. I have one question. How do you know which visitor is a search engine, cause I don’t want to count clicks of search engines?

]]> By: Joshua http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2671 Joshua Wed, 16 May 2007 16:17:29 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2671 Thank you very much! This is exactly what I was looking for! The only thing I don't get, is why this would improve your pagerank and the Adsense-ads. Anyway, many thanks, Joshua (I'm Dutch, so don't blame me for incorrect spelling) Thank you very much!

This is exactly what I was looking for!

The only thing I don’t get, is why this would improve your pagerank and the Adsense-ads.

Anyway, many thanks,
Joshua (I’m Dutch, so don’t blame me for incorrect spelling)

]]> By: Thom Wetzel http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2295 Thom Wetzel Sat, 14 Apr 2007 04:07:20 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2295 Marco - You're running into the same thing as Jeff. req needs to be declared outside of loadXMLDoc so that it's accessible to the callback. I've updated the code so others won't run into this in the future. :) Marco - You’re running into the same thing as Jeff. req needs to be declared outside of loadXMLDoc so that it’s accessible to the callback.

I’ve updated the code so others won’t run into this in the future. :)

]]> By: Marco Soria http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2288 Marco Soria Thu, 12 Apr 2007 22:56:32 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-2288 Hi Thom, first of all thank you for your code, I tried to implement it in a test page im developing and i couldn't make it work. I debbuged it in firefox using firebird and notice that it catching an error in the line req = new XMLHttpRequest(); Because the req variable was not assigned correctly, it had a readyState value of 1 in the ajaxCallback and got the alert error. I would appreciate if you could help me with this issue. Thank you very much Hi Thom, first of all thank you for your code, I tried to implement it in a test page im developing and i couldn’t make it work. I debbuged it in firefox using firebird and notice that it catching an error in the line

req = new XMLHttpRequest();

Because the req variable was not assigned correctly, it had a readyState value of 1 in the ajaxCallback and got the alert error. I would appreciate if you could help me with this issue.

Thank you very much

]]> By: Grumo http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-1221 Grumo Tue, 23 Jan 2007 11:54:38 +0000 http://www.lmnopc.com/2006/10/09/article-ajax-click-counter/#comment-1221 Thank´s a lot for this code. Nice solution. I was looking a lot of click tracking tools and all of them were disgusting. I found http://www.labsmedia.com/clickheat/ interesting too, but it didn´t ruled for pages with frames (were i try to implement the solution). Thank´s a lot for this code. Nice solution. I was looking a lot of click tracking tools and all of them were disgusting. I found http://www.labsmedia.com/clickheat/ interesting too, but it didn´t ruled for pages with frames (were i try to implement the solution).

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