Archive for category JavaScript

AS3 vs. JavaScript Performance Followup (March 2011)

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It’s been about 9 months since my last test of AS3 versus JavaScript and there have been several major releases. I’ve held off on an update to this series since the two most widely used browsers—Internet Explorer and Firefox—have been approaching significant new versions. In the meantime, Adobe has released Flash Player 10.2 as we’ve seen in my performance update series (part one, part two, part three). Today, we pit every major browser against each other and Flash Player itself to get an updated idea of which provides the fastest scripting environment on the web.

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Definitive isNaN()

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I wrote an article in November 2009 titled Faster isNaN() and a followup to it titled Even Faster isNaN() and continue to get comments on both, so today I’m doing a followup to bring together both articles and the many comments on them into one definitive article. (UPDATE: added Windows performance results)

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Function Length

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In my last article on getProperties, there was one strange finding in the tests of standard classes: the Function class seems to have a length field. What is it? Today we’ll see

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AS3 vs. JavaScript Performance Followup (June 2010)

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Version 5.0 of Safari was released on just a couple weeks ago on June 8 and Google Chrome was updated just a week before that. More importantly, to this site anyways, is the release of Flash Player 10.1 on June 10. Today’s article shows an updated performance comparison to check up on the progress being made in both JavaScript (Safari, Chrome) and AS3 (Flash Player).

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Argument Clash

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I am often burned by MXMLC: the AS3 compiler. When I am, I find this infuriating and look for the reason why this happened. Today I’ll tip you off about this problem and delve into what it means if you happen to trigger it.

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Cancelable Function

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I recently had the need to cancel a callback function that I had passed to an API. The API had taken my callback function directly, so there was no way to remove the event listener. So I thought back to an old article I wrote and came up with a solution. Read on for a utility function that will allow you to cancel function callback in AS3 as well as JavaScript and AS2.

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AS3 vs. JavaScript Performance Followup (March 2010)

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Version 10.5 of Opera was released today. Opera 10.0 last performance test made some small strides over 9.64, but it was still the slowest current version of the browser out of the whole test. Also, Google Chrome was updated on January 25th and Mozilla released Firefox 3.6 on January 21st. Today’s article shows an updated performance comparison to check up on the progress being made by Opera, Google, and Mozilla.

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Another Gotcha

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I’m back from a month off for winter break! Today I’ll start off with a very short article to ease back into things. Today I’ll cover a “gotcha” that got me recently and resulted in a bug report that was pretty tough to solve. Read on to see what it was.

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AS3 vs. JavaScript Performance Test Followup

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Today’s article is a followup to an article I wrote in August comparing the performance of AS3 (Flash Player) and JavaScript (various browsers). Since then, two browsers have been updated to new versions and both have claimed speedups in their JavaScript implementations. Today’s article tests those new browser versions to see their speedups in the context of our benchmark: AS3.

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For Vs. While

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I’ve recently been seeing more and more usage of while loops by those who I presume are interested in performance. I’ve always assumed that these was not faster than for loops, but today I am finding out.

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