Skip to main content

Exploiting Ajax

This XmlHttpRequest thingie (aka Ajax as pointed out by Rakesh), is getting INTO my blood. Can't help it, the features provided are really good.

Gone are the days when we required to call form.submit(), everytime we needed to validate simple items, etc. etc. Whew, just thnking about the possibilities screws up my mind. Was checking out as to how others have used this object, and came up with this small list,

Seeing the list, makes me think, maybe i should shift to google :D

Then i came across this site, which talks about Usability Guidelines for XmlHttpRequest. Wow, that's something new. Anyway checked it out and found that his examples and mis-examples are somethings really worth reading about.

Further if you really dont know what i am speaking about, this site of apple's is a great explanation of the object and it's functionalities.

I guess i better sign off before you get bored of XmlHttpRequest. Also need to get back to working on Client CallBack, yeah, u guessed it right, the XmlHttpRequest object provided by ASP.NET 2.0 (codename Whidbey)

Comments

Post a Comment

Popular posts from this blog

My first problem with AJAX

I was using Callback (AJAX) to retrieve a page i had developed . Lets start all over, I was using AJAX to retrieve a part of the contents of a web page. Cool, simple, it downloaded without a pain, then I innerHTMLed it to a span tag. Worked fine, successful, clapped my hands etc.etc. Clicked on the button which had seemed to appear out of nowhere. And then, it all fell apart. The feared exclamatory symbol appeared on the status bar.... And for the newbies, thats an indication of a JavaScript error in IE. Of course, as usual i was all curses at my IE window......Anyway to make a long story short (i AM quite sleepy u know). the scripts which i seemed to be innerHTMLing to the span tag are not executed. And what i mean is anything between the script tags which have been innerHTMLed to that span tag are not executed. Of course i can see a ray of hope in the distance. I mean the distance till tomorrow morning. And just for kicks, check out a hi-fundoo flash file titled EPIC 2004 . And for...
4 comments
Read more

Imagine...an internet based world

Was reading "The Google Story", when i got this wierd idea. Consider a stripped down version of Linux, meant only for doing simple things such as browsing the internet, to read from the various drives (which is primarily meant only for storage of personal data), to play music and some single-player games. All the rest provided by the internet. Information searching/Chatting/Mailing/Documentation editing/journal maintenance/daily schedule maintenance/news/rss/shopping, etc. What else will you use for your computer for? Ok, actually i have been working on mainframes for some time now and am getting adjusted to the "dumb terminal" concept. Then i started associating the concept with scenario we are observing all over the net. As a matter of fact this will reduce the power of processing required on the client side also!!! Looks like the world is changing.... for the bettter, yup, i am sure. technorati tags: New internet age , dumb terminal , internet based world
3 comments
Read more

Changing JAVA_HOME on a HDP 1.1 Hadoop on Windows Setup

We were setting up a small cluster of  Hadoop for some requirements, and decided to go with the HortonWorks release of Hadoop. ( HDP 1.1 for Windows ). After installing, we realized that for some reason the Oozie service was not starting up . (we tried both the CLI command provided with the HDP installation, as well as trying to manually start the service via services.msc). Looking through the log files (<HDP 1.1 installation path>\oozie-<version>\Service directory, specifically the oozieservice.out.log file) we found the error -    and so realized that Oozie server is dependent on JDK. It does not work with only JRE. To correct this we uninstalled JRE, and installed JDK. We also manually modified the JAVA_HOME environment variable to point to the new installation path. And then Oozie server started working all fine. But all the rest of the services (hadoop jobtracker, hadoop datanode etc.) stopped starting. Checking the logs of the services, we fou...
2 comments
Read more