CSS in JS is a way of writing css styles in javascript with much more flexiblity and features.

What is CSS in JS?

CSS in JS is a way of writing css styles in javascript with much more flexiblity and features.

I have already created a video about this on the Cules Coding youtube channel.

Why CSS in JS?

Suppose you have a large-scale application with a lot of components. Alt Text

Each component has different styles. So you add class names to them. Those class names have some styling. Alt Text

Now it is easy to mess up with component names like the picture below. Alt Text

And your whole layout breaks.

How can this problem be solved?

The solution is Scoping CSS. Instead of writing css globally in css styles, what if we can write them inside the component. Then the css styles won't affect other components.

But how do we do something like this?

This is where css-in-js comes into play. Css in js is writing css inside javascript. And we want to write css inside javascript. Now, what css-in-js the library will do is, it will generate a unique class name for the component. And that class will have all the styles. Alt Text

It will add a unique hash to the class name. Just because the hash will be unique, that's why all the components will have a different style. Now we have Scoping CSS.

How do we write CSS in JS?

There are bunch of libraries out there. Popular ones are:

Alt Text

I like the Styled Component most. You can use whatever you want.

Don't think that all you can do with css-in-js is write scoping Css.

There are a lot of features that those libraries provide us. Like theming, props adaption, extending style, and so on.

And also remember you are writing in JavaScript. That means you can create your functionalities and features. So, don't let yourself restrict within the library features.

To learn more watch the Video.

Shameless Plug

I have made few project based videos with vanilla HTML, CSS, and JavaScript.

You will learn about:

  • Javascript intersection observer to add cool effects
  • DOM manipulation
  • Aligning elements with CSS positions.
  • How to make responsive websites.
  • How to create slide based webpage.

These will be great projects to brush up on your front end skills.

If you are interested you can check the videos.

You can also demo the application from here:

Please like and subscribe to Cules Coding. It motivates me to create more content like this.

That's it for this blog. I have tried to explain things simply. If you get stuck, you can ask me questions.

By the way, I am looking for a new opportunity in a company where I can provide great value with my skills. If you are a recruiter, looking for someone skilled in full stack web development and passionate about revolutionizing the world, feel free to contact me. Also, I am open to talking about any freelance project.

About me

Why do I do what I do?

The Internet has revolutionized our life. I want to make the internet more beautiful and useful.

What do I do?

I ended up being a full-stack software engineer.

What can I do?

I can develop complex full-stack web applications like social media applications or e-commerce sites. See more of my work from here

What have I done?

I have developed a social media application called Confession. The goal of this application is to help people overcome their imposter syndrome by sharing our failure stories.



More screenshots

I also love to share my knowledge. So, I run a youtube channel called Cules Coding where I teach people full-stack web development, data structure algorithms, and many more. So, Subscribe to Cules Coding so that you don't miss the cool stuff.

Want to work with me?

I am looking for a team where I can show my ambition and passion and produce great value for them. Contact me through my email or any social media as @thatanjan. I would be happy to have a touch with you.


Blogs you might want to read:

Videos might you might want to watch:

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