High-Performance javascript: Why Everything You’ve Been Taught is Wrong

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Created on 31 August, 2007by osnow

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Language: English Status: Public Category: Software Creative Commons: Attribution-NonCommercial-ShareAlike License
Views: 7,837 | Comments: 6 | Favorited: 1 | Rating: 1 Login to rate
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Speaker: Joseph Smarr
Company/Organization: Plaxo, Inc.
In sum, Joseph argues for a four-point approach to achieving maximum performance in your web-app:
  • Be lazy: Don’t load or do things before you need to; maybe you won’t need to load or do them at all.
  • Be responsive: Make things happen quickly. If you can shave 100ms off of an interaction by responding to a mousedown event instead of a click event, do it.
  • Be pragmatic: Frontend engineering is hard enough. Don’t make it harder than it needs to be.
  • Be vigilant: Blank web pages are fast. Web pages become slow because you put stuff in them; slowness is your resonsibility. Vigilance is required to prevent slowness.

http://josephsmarr.com/2007/08/29/my-ajax-talk-is-now-on-yui-theater/

Comments

useruseruser 13 February, 2008 09:11
For accessibility, onmousedown needs to be paired with onkeydown to accommodate keyboard navigators. Otherwise, it's better to stick with onclick, which most agents automatically associate with the enter key onkeypress. Safest: Use device-independent events (onfocus, onblur, onchange) or pair events (onmousedown onkeydown or onclick onkeypress).
 
vidmi83 09 June, 2010 05:41
I agree those tips are great.
although i apply them to windows appliocations.

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aregy 04 July, 2010 07:12
Be lazy: Don’t load or do things before you need to; maybe you won’t need to load or do them at all.

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aregy 04 July, 2010 07:14
Be lazy: Don’t load or do things before you need to; maybe you won’t need to load or do them at all.

Nice Thanx
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pamela 22 July, 2010 21:20
I agree, unistalling useless stuff helps to achive higher performance of web site.

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ballos 11 August, 2010 04:50
I agree those tips are great.
although i apply them to windows appliocations.

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