Load JavaScript Faster 4.39 http://spkr8.com/t/1413

Description:

Scripts are the most painful resource to load in your page - they slow down the page more than images, stylesheets, even Flash. Why? Because when browsers start downloading a script, they stop rendering the page and downloading other resources. Even newer browsers that tout parallel script loading (IE8, Firefox 3.5, Chrome 2, Safari 4) still block rendering and downloads when loading scripts. In this talk, I'll present several techniques for avoiding these problems including splitting the initial payload, loading scripts without blocking, and coupling asynchronous scripts. This talk is only relevant for web sites that use JavaScript and want to be fast and have happy users.

Comments on this Talk

Stream tedroche, 13 Sep 14:32

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Great material, lots of good information, but could save 3% in overall presentation download time, by removing "like", ", right?" and "So," from the beginning, middle and end of every sentence. domain.language.southern_california=false

Stream stevenblack, 13 Sep 14:49

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Great presentation, best so-far at jQueryCon. Book-shilling is OK as far as it goes. I got a lot from following the slides downloaded from Steve's website.

Shame this session wasn't longer.

Missing sbujold, 13 Sep 15:04

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best presentation so-far, great mix between slides and demos and show actual benefits of speak.

Missing bryall, 13 Sep 15:05

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Great presentation, only part I disliked was the sprite stuff, but other than that good stuff.

Stream mondayjblack, 13 Sep 15:28

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Funny, concise, and informative. Well worth seeing.

Stream grahamb, 14 Sep 13:25

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Great delivery, wish it could be longer. Looking forward to seeing more at the ajax experience.

Stream bobholt, 14 Sep 13:59

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A lot of information that was immediately applicable to improving page load and performance. Awesome!

Missing lukeb, 16 Sep 01:11

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Definitely enjoyable talk. Good mix of entertaining, challenging, and inspiring (like his getting all excited about SpriteMe). Great job handling some of the questions and constructive criticism of his app. Awesome information on YSlow and PageSpeed. Will be very helpful to me.

Missing marcossp, 15 Apr 18:41

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One way to use the scripts would allocate them at the end of the page and thus the final code to be read by browsers and even though there is some delay in loading of the page content has already been shown. Some examples: Otimização de sites, Desentupidora, Relogio de Ponto and Acompanhantes

Missing hareton, 16 Apr 08:20

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Missing nizzy, 19 Apr 23:30

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I don't see the presentation or the talks on this page. Where is it?

Missing davidleonen10, 24 Apr 09:51

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Hey this is really nice information. I was looking for something similar like this. Thanks for this useful information.

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Missing goriodacs, 17 May 09:34

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That is true, scripts slows down the page that you are accessing. This has happen to the Free Essay Library site where I get my free essays. I emailed them about the problem and they reponded by fixing the problem.

Missing sunhapol, 18 May 06:54

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You are right! And also be careful because there are scripts that are also spywares. I once use scripts in my site home improvement and it makes my very slow to access. I remove the scripts and use wordpress.

Missing chris251984, 26 May 19:21

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I keep getting fed up by these java scripts, I hope your suggestion gives some sort of respite looking forward to act upon it. Chris Harris Monte design glider

Missing james25, 02 Jun 13:24

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Thanks for this useful information. I will apply this in my websites poker tables and custom poker chips

Missing davidleonen10, 05 Jun 10:10

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I have read a number of posts of yours, but this is the one that I like the most. So expecting some more ideas from your side. Thanks
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Missing judy6kline, 18 Aug 03:00

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Big thinking is where all the great leaders pull their energy, I just read Donald Trump's 2007 book. Stop by and learn about breast pills without the surgery.

Missing bilal1, 20 Aug 18:53

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Nice and informative post. cctv camera

Missing davidleonen10, 21 Aug 10:01

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I really liked the post and the stories are really thanks for sharing the informative post. How To Cut Your Own Hair

Missing terrence, 31 Aug 04:46

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Comment deleted by on August 31, 2010 at 4:48 AM

Missing terrence, 31 Aug 04:50

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It's precise, definite and reliable information to be followed. fort worth web design

Missing kenanderson, 01 Sep 11:16

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what is bad with the javascipt is you have to install java foryou to run it and some java needs more space in your harddisk which makes your system run slow sika deer hunting | whitetail deer hunting

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