Need the possibility to load CSS asynchronously

[dmitrii-fediuk]

The decision whether a JavaScript component need be shown could be made when the layout is already built, so the component is unable to add its CSS resources by the standard way (\Magento\Framework\View\Page\Config::addPageAsset()).
Is any standard possibility to load stylesheet asynchronously? (like require-css do).

[kandy]

You can use requirejs + data-mage-init / x-magento-init. See: http://devdocs.magento.com/guides/v2.0/javascript-dev-guide/javascript/js_init.html

[dmitrii-fediuk]

I do not see any word about CSS there.

[kandy]

Sorry, i missed that it's about css. require-css will be good for this

[dmitrii-fediuk]

My workaround solutions: https://mage2.pro/t/149

[guz-anton]

You can do it now in your project just with mentioned require-css.
Steps to do:
0. Imagine you are writing own Magento module

1. You go to view/frontend folder under Your module.
2. Create file requirejs-config.js with content:

var config = {
 'map': {
  '*': {
   'css': 'Your_Module/js/require-css'
// 'css': 'https://cdnjs.cloudflare.com/ajax/libs/require-css/0.1.8/css.js'
// 'css': 'https://cdn.jsdelivr.net/require-css/0.1.8/css.min.js'
 }
};

1. Put source from https://cdnjs.cloudflare.com/ajax/libs/require-css/0.1.8/css.js to Your/Module/view/base/web/js/require-css.js
2. Here you are! You can use it. For example:

require([ 'css!mage/calendar' ], function() {
   // JS code is ready to use markup with styles
});

And now Magento has no precedent to use css load in JS code. So we doesn't provide such plugin out-of-the-box.

[guz-anton]

Hi Dmitriy,
We decide to make improvement in this area. We'll do some investigation under MAGETWO-55352.

[piotrekkaminski]

Thank you for your submission.

We recently made some changes to the way we process GitHub submissions to more quickly identify and respond to core code issues.

Feature Requests and Improvements should now be submitted to the new Magento 2 Feature Requests and Improvements forum (see details here).

We are closing this GitHub ticket and have moved your request to the new forum.