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Hi all! The meeting will take place tomorrow, March 14, 2011. This time, I’m going to dive deep into JavaScript concepts, such as context, closures, functions and so on. In my feeling, understanding those concepts is an absolute must for every web developer. Come and learn for free! You can still register using this link: http://wdcil3.eventbrite.com . See you there!
Internet Explorer 8 has introduced developers tools for inspecting and debugging web pages. It allows, for example, selecting a DOM element and investigating it, debugging JavaScript by stopping on errors or breakpoints and some other useful stuff. However, one thing was missing there: network traffic capturing and analysis. Traffic capturing is vital for analysis of your web site. Such tools usually show all the resources that are downloaded during a request, along with their response status...
Shlomo has shared with us in his post a trick that can be used to pass parameters to event handlers. The trick is based on the fact that every HTML element can have unlimited custom attributes, therefore, using element's setAttribute() method it is possible to append any attribute you can imagine. Shlomo also shows us one of the possible ways of dynamically creating rows in HTML table using browser’s DOM, and attaching events to elements . One drawback with this trick is that is breaks...
There are times you need to develop a data-entry web form calling and AJAX-enabled web service to perform some complex computations that must be done on the server (for example, when a database access needed to do the computation). The computation is sometimes based on numerous data-entry fields, so when a change in one of the fields has occurred, you want to send a web service request to re-compute the data. As a most simple example, I’ll create a form that is capable of doing an extremely difficult...