You can use fragment to write multiple line of code or tags, Let’s have an example to clear this idea: Example: class App extends React. We can also use the React Fragment when returning a group of elements, conditional rendering a group of elements, and working with tables. So in that case we have a solution which is ‘fragment’. React Fragments is introduced from the 16.2 and above version, to facilitate the grouping off a list of children without adding extra nodes to the DOM. And if we want to render multiple elements, we were using tag if you remember, but the question is what if we don’t want to use div tag? also, if we create some projects in react then it’s not possible to write whole program into one div tag it will be horrible idea to be honest. This article explains how to update components only when necessary, and how to avoid common causes of unintentional re-renders. We can also use, instead of React.Fragment but this shorthand syntax does not accept key attributes.In this part we will learn about react fragment and its types, As we know that in ReactJS, render method can display only one element or tag. When working in React, its a common pattern to return multiple elements by wrapping them with a container element like div. React Fragments is introduced from the 16.2 and above version, to facilitate the grouping off a list of children without adding extra nodes to the DOM. Re-rendering React components unnecessarily can slow down your app and make the UI feel unresponsive. So with ReactJS 16.2 version, we will use the React.Fragment which will remove the need to use an extraneous tag. React Fragments do not produce any more DOM elements, therefore the child components of a Fragment will be rendered without any wrapping DOM node. In the above example, we have to use an extra tag to wrap the children JSX elements. Fragments are a new way to add many elements to a React Component without having to wrap them in a DOM node. We learned an important concept and I hope you will start using React Fragment in your projects. We can also use the React Fragment when returning a group of elements, conditional rendering a group of elements, and working with tables. It is required that every React component must return a single JSX element. Now you have a proper understanding of why the React Fragment was introduced and which kind of problem it solves. The following sample code shows how to create a simple React application without React Fragments. Explain the use of fragments in React components. Before, React forced us to return an element wrapped. ReactJS Fragments were introduced with React 16.2 version to remove the need to define an extra tag which also takes extra memory. Since version React 16.2.0 we are able to return arrays and strings from the render method. While building a ReactJS application, all the JSX code needed to be wrapped down inside a parent tag. Importance of React Fragments: The execution of code is faster with the use of React fragments as compared to the div tag.
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