clsx VS classnames

clsx is a tiny utility for constructing className strings conditionally, I use it in conjunction with tailwind-merge which merges Tailwind CSS classes without style conflicts.

I am familiar with the library clsx although I have never used it personally. I don't often have the need for conditional classes and when I do it's usually an inline ternary expression in the style or className prop. Is that bad/good? Are there any other popular libraries other than clsx, or anti-patterns I should be aware of when doing conditional classes in React? Thanks fam

I use CLSX for all tailwind dynamic styles. Super simple, lightweight and now is almost part of every project I build haha

Clsx

https://github.com/lukeed/clsx “A tiny (228B) utility for constructing className strings conditionally.”

Then use something like clsx

For conditionally applying or removing classes, you should take a look at clsx.

clsx has better performance over the classnames package. That’s why it was created. Take a look at their benchmarks in the repo.

Hey, I'll have you know I have lots of fun using Tailwind with clsx =)

Next.js Redux Toolkit Framer Motion Tailwind Radix UI Radix colors react-use clsx lodash ms

The component needs the classname dependency and a search icon which I referenced to work. So install the classname package and download the search icon below.

classnames: Makes dynamic CSS class application a breeze. Learn more

But of course, it is a button, so it could have multiple variants: primary and secondary(you can increase the number of customizable params, but we will limit it to 1, variant). To implement this you can use any library for combining classnames, for example, classnames, clsx. Let’s use the classic one, "classnames".

Use classnames and you can comma delimited your class names where needed.

To get started with our image modal implementation, i'll assume you already have a React project set up. For UI i’m using Tailwind CSS. But you can use any UI library as your wish. For the image cropping and rotating functionality, we'll be utilizing the react-easy-crop library. This library provides a simple and intuitive way to crop and interact with images and videos within a React component. We will also use the heroicons and classnames libraries in our tutorial. To install all the libraries and their dependencies, open your terminal and navigate to your project's directory. Run the following command:

Save yourself some headache and use https://github.com/JedWatson/classnames

There is an NPM module called classnames that makes this a bit easier: https://www.npmjs.com/package/classnames

To use the global Tailwind types from styles/cssClasses.d.ts, I've leveraged a lot of work from this post, so credit goes there for a lot of the complex TypeScript wizardry that makes things work. In essence, it builds upon the classnames (or clsx) to provide a helper function that gives us with the type safety we're after. This cleverness means we get type checking that works with whitespace, multiple classes (e.g., "container p-5")and arbitrary values (e.g., "border-[5px]"). The input "container p-5 invalid-class" provides the nifty error message:

but I wouldn't recommend it, because I think the point of using tailwind is to not having to abstract class into component based style. it even better to write tailwind classes into the html directly and to use tailwind-fun sparingly and only if you needed to add logic to your classes. tailwind-fun purpose is more like of https://www.npmjs.com/package/classnames rather than any other css library

Use the classnames library, that way I can group the utility classes together (one line) and break them up into multiple lines, and additionally have some of them be conditional based on variables/parameters;