Styled-component vs jss vs emotion for React
A very short answer (there is much more to it in general)
- CSS Template strings
SC parses template strings with CSS for at runtime.Emotion has a babel plugin to prepare those parsed things in a format that can render final CSS at runtime faster.JSS currently only supports basic template strings and otherwise uses objects (there are plans to add better support for template strings)
- Updating style rules
SC and Emotion generate new CSS rules when you update dynamic styles, JSS will update existing rules (note you can see updated rules in styles tab of dev tools, but not in the style tag): reproduction
- Dependency on React
SC is react only. Emotion has a syntax that can be used without react (css``). JSS has separate packages: jss (core, no react), react-jss (HOC injecting classes), styled-jss (SC like API).
- Plugins
Currently only JSS supports plugins.
Static extraction
Currently only Emotion supports full static extraction. JSS is working on it too.You can get static extraction with JSS today if you put styles into separate files (something.styles.js) and extract them using a webpack plugin (no dynamic values though).
Performance
http://necolas.github.io/react-native-web/benchmarks/
- All of them generate actual CSS using a style tag.
As the above answer I haven't heard of jss and emotion either. Probably because they're not that common in combination with React. I have myself used regular CSS, inline styleing, CSS modules and now the latest Styled Components.
I like Styled components as it's easy to work with. So answer to (some of) your questions is.
- See image. This is how it compiles to with Styled Components. It creates unique classes.
- Don't need to eject. Just import it from npm and use
- Think it becoming more and more popular and the community seems to like it. There are always different opinion and there's also many that don't like to mix styling and JS code in the components.
- Really haven't checked performance but it seems fast. =)
