What is @emotion/css?
The @emotion/css package is a powerful library for writing CSS styles in JavaScript. It allows developers to style their applications efficiently with JavaScript and leverage the full power of CSS in their applications. It supports dynamic styling, which is particularly useful for theming, adjusting styles based on props, and more.
What are @emotion/css's main functionalities?
Basic Styling
This feature allows you to create basic CSS styles using template literals. The styles are then compiled into class names that can be applied to your components.
import { css } from '@emotion/css';
const className = css`
color: hotpink;
font-size: 20px;
`;
Dynamic Styling
Dynamic styling enables the creation of styles that can change based on inputs, such as props in a component. This is useful for theming or any situation where styles need to change based on user input or application state.
import { css } from '@emotion/css';
const dynamicStyle = (color) => css`
color: ${color};
font-size: 20px;
`;
Composition
Composition allows you to build complex styles by combining multiple simple ones. This promotes reusability and modularity in your style definitions.
import { css } from '@emotion/css';
const base = css`color: darkgray;`;
const override = css`
${base};
font-size: 16px;
`;
Other packages similar to @emotion/css
styled-components
Styled-components is a library for React and React Native that allows you to use component-level styles in your application. It uses tagged template literals to style your components. It's similar to @emotion/css in providing a CSS-in-JS solution but differs in its API and the way it integrates with components.
jss
JSS (JavaScript Style Sheets) is a CSS-in-JS library that allows you to write CSS in JavaScript. It supports plugins to extend its capabilities and can be used with or without React. Compared to @emotion/css, JSS offers a more extensive plugin system but has a different syntax and setup process.
linaria
Linaria is a zero-runtime CSS-in-JS library that extracts CSS to separate files at build time, resulting in smaller bundle sizes. Unlike @emotion/css, which injects styles at runtime, Linaria's approach to extracting static CSS files can lead to better performance for static sites or server-rendered applications.