2/19/2023 0 Comments React fragment![]() ![]() In those cases you need to use the full tag. Now it's worth mentioning that if you want the key attribute or anything like that you can not use the shorthand. Just use the React. It is required that every React component must return a single JSX element. Enter React Fragments Using the Fragment component, we can now accomplish the same without the array syntax and without using keys. Shorthand Fragment: The output of the first code and the code above is the same but the main reason for using is that it is a tiny bit faster when compared to the one with the ‘div’ tag inside it, as we didn’t create any DOM node. Explain the use of fragments in React components. So to be able to return Title and Content as children of Article, we only have to put them in an array in the render function. The solution, which was introduced with React 16.2, is to make use of React Fragments. In the first release of React 16, Fragments were done by returning an array of the children. Fragments Short Syntax: For declaring fragments, there is another shorthand exists. Less memory is utilised with the use of React fragments as compared to the div tag. We got two react components - Title and Content - that we want to return as children in the rendering of a third component called Article. Importance of React Fragments: The execution of code is faster with the use of React fragments as compared to the div tag. To see how this works, consider the following scenario. Fragments let you group a list of children without adding extra nodes to the DOM. To provide relief from adding a container. When working in React, its a common pattern to return multiple elements by wrapping them with a container element like div. Luckily with the introduction of Fragments this is not the case anymore. A common pattern in React is for a component to return multiple elements. In React, when returning any element in render() method, multiple elements must be wrapped within the main container. ![]() ![]() This is a big deal because in the pre-react 16 era you could only return one child element - meaning if you had multiple children you had to wrap them in a div or something similar. Using React in fragments HTML is being used as a placeholder, and the defined React component replaces its content when it is loaded. What Fragments enables us to do is to return multiple children from a component. In this post, we're going to take a look at another huge improvement that was introduced in React 16 called Fragments. ![]()
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