[Feature request]: Provide an option to improve page loading times by using defer on all javascript files.

[CaMer0n]

Motivation

By using the defer attribute in HTML, the browser will load the script only after parsing (loading) the page. This can be helpful if you have a script that is dependent on other scripts, or if you want to improve the loading time of your page by loading scripts after the initial page load.

See https://www.marketingtracer.com/seo/improve-webpage-speed-defer-javascript

Proposed Solution

Move js 'settings' to its own file. Provide a flag to add 'defer' on all javascript files. Wrap inline code to make sure it is only executed after the page has loaded.

Alternatives

None

Additional Context

No response

[CaMer0n]

For now use: define('e_JS_DEFER', true); to test.

[Jimmi08]

This change caused this:

https://github.com/e107inc/e107/issues/5246