Defer attribute

[Paulsky]

Just tested this module for Magento 2.2.4 and it seems to be working. The Javascript is placed before the closing body tag.

But I expected to have the script tags containg the defer="defer" attribute. Is there a reason for this and is it possible to add the attribute?

Thank you in advance!

[fballiano]

As far as I know (https://www.w3schools.com/tags/att_script_defer.asp) the defer attribute has to be used only for external scripts but:

• we're "moving" all the scripts to the end of the page
• there are both external and inline scripts
• if we defer the external we may be facing the situation where some inline scripts are run before the external causing error

am I missing something?

[Paulsky]

Sorry, I didn't know the attribute has to be used only for external scripts. I have seen a couple of 'optimization' plugins which are setting the defer attribute, even though those scripts are internal scripts.

And I think you are right about the fact that there may be situations where some inline scripts run before the dependencies are loaded.

Could it be possible create an option in the module to opt-in include the defer attribute?

[fballiano]

I don't know, it seems to me that maybe we can cause more problems, would we add an option to "defer every script"? or should it be done for every single script (which is almost impossible to do)?