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HomeHomeUsing DNN Platf...Using DNN Platf...Performance and...Performance and...How can fix Defer parsing of JavaScript on DNN?How can fix Defer parsing of JavaScript on DNN?
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10/9/2014 8:35 AM
 
Armin Rahimian


www.bazaryab.com
Joined: 10/5/2010
Posts: 362

Hi all

Please look at this Compare 3 Store Analytics by GTMetrix: 

http://gtmetrix.com/compare/RHaiGEYd/yQGLUyHy/YD2P76Fc

The middle one is DNN and left and right is for other Technologies like OpenCart or Magento Online store.

DNN is too slow when we open it and others are to fast. the Important things I this Defer parsing of JavaScript! for DNN (0) and other (91) and (70)... why? all DNN site are like this. Defer parsing of JavaScript = 0
 
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10/9/2014 5:18 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
we could defer scripts, but the problem is that certain javascript may assume the script is already loaded - whilst this is easy to fix via document.ready (see http://www.dnnsoftware.com/answers/de... ), there is plenty of cases where modules have not done so, hence why we haven't made this change. Realistically it rarely boosts performance much - it only shows up when people use page speed measurement tools
Buy the new Professional DNN7: Open Source .NET CMS Platform book Amazon US
 
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10/9/2014 5:30 PM
 
Armin Rahimian


www.bazaryab.com
Joined: 10/5/2010
Posts: 362
Ok, Dear Cathal, Thank you for your grate answer.
A Question.
Do you know how many percent this Parameter can make slow DNN sites? is it more effective or less?

In this Link what is most Problem that is made slow website on loading: http://gtmetrix.com/compare/RHaiGEYd/... the middle one test I mean. http://store.ecb.ir
 
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10/11/2014 1:43 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
no idea I'm afraid as it depends on the page and the scripts included - to get an idea you would need to edit the code and add the defer attribute and test, but my feeling is that the benefit would be very small and the risk of breaking javascript quite high (its very common for modules to not wrap script in document.ready)
Buy the new Professional DNN7: Open Source .NET CMS Platform book Amazon US
 
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