React Component Js Vs Jsx

Any other JSX files usually have the jsx extension. These tags get compiled into a direct reference to the named variable so if you use the JSX expression Foo must be in scope.

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Specifying The React Element Type.

React component js vs jsx. JSX may remind you of a template language but it comes with the full power of JavaScript. Using React without JSX is especially convenient when you dont want to set up compilation in your build environment. Hence all React files that contain them are JSX and not JS.

The first part of a JSX tag determines the type of the React element. By convention the entry point of a React application is usually js instead of jsx even though it contains React components. Below you can find the basics of JSX necessary to get you started.

Capitalized types indicate that the JSX tag is referring to a React component. Functional Components or stateless components are the most widely used type of components with a basic syntax of JavaScript Functions that return the JSX code or the HTML code. So anything you can do with JSX can also be done with just plain JavaScript.

They are called as stateless components because they accept the data and display it accordingly and are mainly responsible for the rendering of the UI. JSX is not a requirement for using React. It could as well be jsx.

We recommend using it with React to describe what the UI should look like. JSX produces React elements. Each JSX element is just syntactic sugar for calling ReactcreateElementcomponent props children.

We will explore rendering them to the DOM in the next section.

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