Packet level debugging for Ajax traffic

I encountered a session cookie issue while working with an ajax interaction. To debug this, Rinaldo suggested me to try a tool called balance. It is a proxy with the capability to output protocol level human readable debugging information. It is a lot easier to work with than other network monitor tools such as Wireshark, […]

Hosting your JavaScript based app on code.google.com

While trying to use the hosting service at code.google.com, a Google employee taught me that I need to set the mime-type property on the files, so I can run the JavaScript based code. svn propset svn:mime-type “text/html” myfile.html svn propset svn:mime-type “text/javascript” myscript.js svn commit

Applying time stamp to YUI AJAX calls for IE

In my previous post on this topic, I described the basic idea on using time stamp to work around the caching issue with IE. Here are additional notes on how to time stamp enable various YUI components using the same concept. For autocomplete widget, you can override doBeforeSendQuery function and manually add timestamp parameter. See […]

HTML character codes

Here is a page with tables of HTML/ASCII character codes, which are useful to write encode actions.

Global search and replace in JavaScript

I was delighted to see that vi style of search and replace syntax also applicable with JavaScript’s replace() function. Here is an example.

More JavaScript behavior differences between Firefox and IE

In addition to my previous post about JavaScript behavior difference between Firefox and IE, here are two more: 1. If JavaScript attempts to access HTML before IE finished loading it, you might get “Operation aborted” error. Firefox appears to be very flexible on this and will execute such JavaScript without error. To work around this […]

Very simple JavaScript tuning

I noticed that a piece of JavaScript code takes a long time to execute. So, i created a simple time stamp code to help me better understand how much time the code takes to execute: var startTime = new Date(); // do some processing var endTime = new Date(); var timeDiff = endTime.getTime() – startTime.getTime(); […]

Minify JavaScript

JSMin can reduce the footprint of JavaScript code by removing unnecessary characters. I used the Java implementation and it does work in most cases.

A JavaScript behavior difference between Firefox and IE

I just found out the following difference of behavior between Firefox and IE. Here is the input JavaScript: if(a = b) // do something Firefox will second guess what the programmer was really trying to do and treat the code in the following way: if(a == b) // do something IE will not attempt to […]

Use JavaScript to display HTML as text

I found a need to display HTML as text. The recommended way to do this is to escape the HTML markup so browsers will correctly display the code as text. I found a sample code here.

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JavaScript