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From Doug McCune <>
Subject Re: Apache Flex suggestion - dumping SWF support in favor of HTML5 - listen to Steve
Date Sun, 05 Feb 2012 21:03:53 GMT
> v8-myth-why-javascript-is-not-**a-worthy-competitor/<>

I'd argue the important thing is not the current delta between JS and AS
performance. For rendering-related tasks ActionScript is still way ahead
(as that blog post tries to highlight and praise). However, that's not what
you should focus on. Take a look at this chart: which shows the incremental speed
improvements for AS code execution vs JS code execution.

Ignore the numbers in the chart, and ignore the comparison of AS to JS. The
benchmark only highlights things where JS excels (non rendering things).

Focus on only one thing in that chart: the number of times the lines
change. Since 2007 (when FP9/AS3 came out) there are 3 times when AS3
performance increased. Compare that to the line for JS performance in
Chrome, which has 8 jumps in performance since 2009. That's the difference
that matters.

And yes, you can argue that the GPU stuff with Molehill should be taken
into account, etc (although that doesn't help with performance of any
content not specifically written for GPU rendering). But I think that chart
tells me more than anything else in this debate. AS3 performance has
stagnated. JS performance has consistently increased. Is it as good as AS3
right now? No. But largely that doesn't matter. It's the trajectory that

But enough about JS performance. My point wasn't to talk shit about Flash.
My only point was that writing off HTML/JS as inferior is naive and

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