1. #1
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    Default Extjs is cool; but very slow on firefox !

    Extjs is cool; but very slow on firefox !


    (sorry for my poor english)

    I test ExtJS and it's very good... Grid and EditorGrid are very good tools. And on Internet Explorer 6 or 7 , it's rapid.

    BUT on firefox (all versions), it's very slow ! Normal or it's a know problem ?

    Thanks for your responses.

    Jeff
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    Ext Premium Member BernardChhun's Avatar
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    Default


    it's weird cause for me it's the opposite.

    very fast on Firefox, medium speed on IE7 and laggy on IE6....
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  3. #3
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    Default


    ext rock on FF
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    Sencha - Community Support Team JeffHowden's Avatar
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    Default


    Disable firebug and try again.
    Jeff Howden
    Ext JS - Support Team Volunteer
    jeff@extjs.com

    Any and all code samples that are authored by me and posted on the Ext forums or website are hereby released into the public domain and I release anyone or entity of liability by using said code samples unless explicitly stated otherwise.

    Opinions are mine and not necessarily endorsed by Ext, LLC. Please do not contact me directly for assistance unless requested by me.
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  5. #5
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    Default


    Ok thank you.

    With firebug disabled and webdevelopper disabled on firefox.. it's rapid. Not too rapid than Internet Explorer but it's correct.

    Thank you, ExtJS is very RooooOOoox !!
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    Default Other Possible FF overhead...

    Other Possible FF overhead...


    Dean Edwards has a couple of notes on FF here, you might want to review as well.
    "be dom-ready..."
    Doug Hendricks

    Maintaining ux: ManagedIFrame, MIF2 (FAQ, Wiki), ux.Media/Flash, AudioEvents, ux.Chart[Fusion,OFC,amChart], ext-basex.js/$JIT, Documentation Site.


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    Default


    Will this be fixed in ext.js 2.0 ?

    When enabling javascript.options.strict (in about:config) in FF, firebug shows lots of warnings.
    This is why pages are loading slowly.

    I'm using ext.js 1.1.1 full.
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    Sencha - Community Support Team hendricd's Avatar
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    it only runs slowly if javascript.options.strict is on, as FF then makes the attempt at strict syntax checking (that's the overhead), not because some Extjs code generates strict warnings.
    "be dom-ready..."
    Doug Hendricks

    Maintaining ux: ManagedIFrame, MIF2 (FAQ, Wiki), ux.Media/Flash, AudioEvents, ux.Chart[Fusion,OFC,amChart], ext-basex.js/$JIT, Documentation Site.


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  9. #9
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    Question


    Even after following all the suggestions above, Extjs grid is extremely slow. Under Chrome and IE its wicked fast. I have no problems loading 600 rows with 5 columns under Chrome or IE. What is strange is when I go to scroll up or down with the slider or pressing up/down arrows the CPU is pegged. But if I scroll with the middle mouse wheel there is no delay. Moving Column headers around there is delay.

    Firebug is disabled, web developer is disabled, javascript.options.strict;false.

    Any ideas?
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  10. #10
    Sencha - Management Team abe.elias's Avatar
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    Default


    Does this happen with the buffered grid view as well?

    http://extjs.com/deploy/ext-3.0-rc1....id/buffer.html
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