Imagine you are displaying a list of user avatars in a forum application. By dynamic styles, we mean styles that change frequently or are unique to a single element. The css prop or styled should be used for static styles, while the style prop (inline styles) should be used for truly dynamic styles.
Īdvantages of sharing styles via component reuse include: Import from '.' return Failed to fizzle the frozzle. The simplest way to share styles is to export CSS from a shared file and then import that CSS in many places: Some error messages should also use a large font. All of the error messages should be red and bold.
To illustrate the two methods, let's imagine we're developing an application that needs to display error messages in many different components. There are two main approaches for sharing styles across an Emotion application. All this means is that the CSS for a component should be in the same file as the component itself. One of the main benefits of Emotion is that you can colocate your styles with your components.
#Emotion css update
This makes maintenance more difficult because it's harder to tell which components use a given piece of CSS, and you can easily forget to update the relevant CSS after modifying a component. With normal CSS, the styles for a component are defined in a separate file. Import styled from would change that import to look like this:įinally, take another look at your app running on your dev server and you should now see component names included in CSS classes.Grid : 1 // Error: Type 'number' is not assignable to type 'Grid | Grid | undefined' } ) Colocate styles with components The last step is to change all imports within your components to instead import example, given an import like this: Npm i using the styled syntax with Emotion, which is inspired by styled-components, so I also installed the library for that:
#Emotion css install
You'll need to first install Emotion if it's not already installed: Here's how you can get your component names included in CSS classes: Install Emotion and Related Dependencies Thankfully, there is another way to get this to work without ejecting from Create React App. However, there's not yet support for babel plugins in Create React App. The normal solution for this is to use Emotion's babel plugin. Having the component name appended to the generated CSS class just feels nicer to me! For example, instead of seeing a component get a generated class of css-11co5m7, it would get a generated class like css-11co5m7-List. One solution is to install the React DevTools browser extension and use that to review the generated React component tree.Ī solution that I prefer, in addition to heavily leaning on React DevTools, is to have Emotion generate CSS classes that include the component name. The CSS classes generated are not human-readable, so a lot of components (especially those using divs) end up looking the same. One downside is that it can be difficult to identify your React components when looking directly at the resulting HTML markup in a browser devTools environment. The developer experience with Emotion has some benefits, including having component styles scoped and set directly in a component's Javascript file. I recently started a new React project using Create React App and Emotion, a CSS-in-JS library, for styling.
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