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How to async or defer JS in Liquid?

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  • #9563
    jake-1986
    Participant

    I’m trying to improve site speed, and one thing that might be delaying render are these scripts:

      {{ '//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js' | script_tag }}
      {{ 'jGestures.min.js' | asset_url | script_tag }}
      {{ 'modernizr.min.js' | asset_url | script_tag }}
    

    How can they be made to asych or defer? Or should I simply move them to the bottom? Also I have not made changes like this to my theme yet. Is it easy to revert changes in Shopify? I would just change it to the way it was before if any of the scripts were needed for the initial render, correct?

    Edit: those scripts are in the HEAD section.

    #9564
    dezefy
    Participant

    You have to do it little differently.

    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js" async></script>
    
    <script src="{{ 'jGestures.min.js' | asset_url }}" async></script>
    

    Make sure you copy/download the theme so that you have a backup. also shopify stores revisions so that you can revert back.

    enter image description here

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