With the increasing popularity of server-side Javascript, you may want to have Javascript everywhere. You can use Javascript outside of a browser, on any platform. There are many choices: you can install Mozilla SpiderMonkey, Google V8 or Mozilla Rhino. If you are like me and use Mac OS-X as your development machine, however, you [...]]]> http://www.chentianwen.net/wordpress/2012/02/01/command-line-javascript-cli-on-mac-os-x/feed/ 0 http://www.chentianwen.net/wordpress/2009/11/25/jquery-performance-rules/?utm_source=rss&utm_medium=rss&utm_campaign=jquery-performance-rules http://www.chentianwen.net/wordpress/2009/11/25/jquery-performance-rules/#comments Wed, 25 Nov 2009 06:54:14 +0000 茶男 http://www.chentianwen.net/wordpress/?p=230 from http://www.artzstudio.com/2009/04/jquery-performance-rules/

Once upon a time, all we needed to worry about was reducing Bytes and Requests and playing around with load order to make things faster. Nowadays, we are increasingly impacting one more major component in performance - CPU utilization. Using jQuery and other frameworks that make selecting nodes and DOM manipulation easy can have [...]]]> http://www.chentianwen.net/wordpress/2009/11/25/jquery-performance-rules/feed/ 0 http://www.chentianwen.net/wordpress/2009/11/25/how-to-find-event-listeners-on-a-dom-node/?utm_source=rss&utm_medium=rss&utm_campaign=how-to-find-event-listeners-on-a-dom-node http://www.chentianwen.net/wordpress/2009/11/25/how-to-find-event-listeners-on-a-dom-node/#comments Wed, 25 Nov 2009 06:38:03 +0000 茶男 http://www.chentianwen.net/wordpress/?p=228 from http://stackoverflow.com/questions/446892/how-to-find-event-listeners-on-a-dom-node/447106#447106

It depends on how the events are attached. For illustration presume we have the following click handler:

We’re going to attach it to our element using different methods, some which allow inspection and some that don’t.

Method A) single event handler

create a flash button in flash.

single click on the flash button and open the action script window related to the flash button.

in the action script window please write down the following action script:

on (release) {
getURL(“javascript:JavascriptFunction();”,”_self”);
}

where JavascriptFunction() is the external javascript [...]]]> http://www.chentianwen.net/wordpress/2009/11/05/calling-external-javascript-on-button-click-in-flash/feed/ 0 http://www.chentianwen.net/wordpress/2009/05/22/xmlhttp-notes-readystate-and-the-events/?utm_source=rss&utm_medium=rss&utm_campaign=xmlhttp-notes-readystate-and-the-events http://www.chentianwen.net/wordpress/2009/05/22/xmlhttp-notes-readystate-and-the-events/#comments Fri, 22 May 2009 08:28:00 +0000 茶男 http://www.chentianwen.net/wordpress/?p=195 from http://www.quirksmode.org/blog/archives/2005/09/xmlhttp_notes_r_2.html

As we all know an xmlhttp script requires the use of the readystatechange event. In theory, using the load event is also possible, but Explorer doesn’t support it on xmlhttp requests.

Both these events, and the readyState property, have a few odd quirks when used in an xmlhttp environment, though. These [...]]]> http://www.chentianwen.net/wordpress/2009/05/22/xmlhttp-notes-readystate-and-the-events/feed/ 0 http://www.chentianwen.net/wordpress/2009/05/19/ie-page-cache-problem-with-ajax/?utm_source=rss&utm_medium=rss&utm_campaign=ie-page-cache-problem-with-ajax http://www.chentianwen.net/wordpress/2009/05/19/ie-page-cache-problem-with-ajax/#comments Tue, 19 May 2009 05:30:27 +0000 茶男 http://www.chentianwen.net/wordpress/?p=193 When doing AJAX call, IE will cache every AJAX call. Hence, url such as ‘/post.do’ will return the same thing and actually the AJAX request will not be sent after the first time.

put AJAX url ‘/post.do’ with a time stamp as following:

The Exceptional Performance team has identified a number of best practices for making web pages fast. The list includes 34 best practices divided into 7 categories.

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