![]() That is the key attribute, used when mapping a collection to an array of components. The last thing to note is that Fragment only supports one attribute. Think of any time that you’ve needed to wrap component content in a wrapper element.įor example, you could do not the following before class MyAwesomeComponent extends Component Earlier for returning multiple elements, the elements were wrapped in a div. These are used where, earlier the developers were using wrapper div as React Fragments help us in grouping a set of children without the need to add additional nodes to the DOM. Before those elements would need wrapping though. React Fragments were first launched in the version React 16.2.0. Under the hood, it works just as same as our Aux component above. It’s not uncommon for a component to return more than one element. React.Fragment React provides the same functionality above, for wrapping adjacent JSX elements, out-of-the box. One of the constraints of JSX is that you cant return two or more elements from a components render. The component must return at most 1 top-level node. DOM Frugality: returning arrays and React.Fragment. When returning JSX from a React component we need to maintain the tree structure of the HTML elements. #REACT FRAGMENT HOW TO#It reduces littering of the DOM and will help you keep your markup semantic and relevant □ Why ? What Is React Fragment and How To Use It By Dawid Budaszewski Beginner React Tutorials It’s is a common practice in React to render dynamically multiple sibling components. #REACT FRAGMENT UPGRADE#Hands up if you’ve ever wrapped the content of a component in a or introduces the Fragment component.įor those in camp TL DR upgrade to and instead of wrapping elements, use the Fragment component. ![]() It can also lead to littering the DOM with “wrapper” elements. ![]() The former tends to be the quicker and easier solution, but not always semantically ideal. This gave you two options, wrap the component content in a single element, or rethink the design. 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. ![]() Return more than one and you’d see a message like “ Adjacent JSX elements must be wrapped in an enclosing tag”. Up until a component could only return a single element. When returning JSX from a React component we need to maintain the tree. Say “Goodbye” to unnecessary divception in the DOM □Įver inspected the DOM in a React app? Ever greeted with what seems like a constant nesting of s? Had to wrap the content of a component yourself? Even though it didn’t feel semantically correct. Its is a common practice in React to render dynamically multiple sibling components. React fragments allow us to arrange numerous sibling components together in the rendered HTML without adding any additional syntax. ![]()
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