What is PascalCase in React?

They use PascalCase for filenames because a React component is nothing but a class. This is a very popular JavaScript naming convention for classes. So, any class, even if it’s not a React component should follow PascalCase naming convention. The name of the filename will always reflect what is present in that file.

Should file names be capitalized React?

If you struggle to enforce one, you could stick to something like Airbnb’s mostly reasonable approach to React and JSX. PS: As long as you’re consistent, I would say you’re safe. File names must be all lowercase and may include underscores (_) or dashes (-), but no additional punctuation.

How should React components be named?

Naming Convention Components should be PascalCase – capitalized in camelCase as well and named for their function and not the specific application feature (in case you change it later).

Can React work without Webpack?

You don’t need webpack. You don’t even need JSX, you can just write React. createElement if you want. If you want JSX you need Babel, which will work fine with grunt.

When using React You need to call addEventListener explicitly to add listeners to a DOM element after it is created?

When using React, you generally don’t need to call addEventListener to add listeners to a DOM element after it is created. Instead, just provide a listener when the element is initially rendered.

Do components re render when props change?

By default, when your component’s state or props change, your component will re-render. If your render() method depends on some other data, you can tell React that the component needs re-rendering by calling forceUpdate() .

Why should Component names start with capital letter?

But because maintaining that list isn’t all that fun, and because web components makes it possible to create custom elements, they made it a rule that all React components must start with a upper case letter, or contain a dot.

What does the Webpack command do?

The “webpack” command is used to transpile all the JavaScript down into one file. It runs React local development server. It is a module bundler.

Why do we need webpack for React?

When you run webpack in your terminal window it builds your React application and places it into the dist folder you made earlier so you can try it. In fact, it’s there right now: if you look in dist you’ll see a file called bundle.

Why webpack is used in React?

Webpack is a popular module bundling system built on top of Node. js. It can handle not only combination and minification of JavaScript and CSS files, but also other assets such as image files (spriting) through the use of plugins. js, which contains the configuration needed for webpack to create the bundles.

When should you use React PureComponent?

PureComponent Is Primarily Used for Performance Optimization. As outlined in the React docs: If your React component’s render() function renders the same result given the same props and state, you can use React. PureComponent for a performance boost in some cases.

What is addEventListener in React?

Adding an Event Listener You can create an event listener in a React app by using the window.addEventListener method, just like you would in a vanilla Javascript app: 1window. addEventListener(‘keydown’, (event) => { 2 // …