Spectrum's source frequently uses fragment-returning components for this purpose. This is useful for components that return form and text markup - as wrapping the result in a container can cause headaches when styling things. Vì vy v c bn chúng ta có th s dng React.Fragment thay th cho nhng ni chúng ta th div bao bc các phn t. Fragment allow us to have one root tag element for multiple child tags as shown. You can use fragments to create components that return a list of elements without wrapping them in a container or array. React fragments cho phép bn nhóm các phn t vào vi nhau mà không cn phi b sung mt th nào bao bc chúng và nó cng s không th hin ra HTML. return or render function dont allow us to return multiple tag elements.

I’ve taken a look through a few open source projects to see how Fragments are being used in practice - and found a number of common use cases: #1. To specify a key for a fragment, youll need to use the standard JSX element syntax you cant use the new <> syntax.

Of course, you don’t have to worry about any of this if you’re using create-react-app, because it has supported fragments from when they were first released! #Typical usesįragments have now had plenty of time for them to make their way into real world codebases. A fragment is just like empty syntax and wont.

But now that a year has passed, most major tools support it, including: However React gives you an element called a fragment so that you dont have to render a

. script) need to be contained as direct children of the Head element, or wrapped into maximum one level of or arraysotherwise the tags wont be correctly picked up on client-side.

The contents of head get cleared upon unmounting the component. When fragments were first released, there wasn’t much support for this syntax. The keys of the passed object (that is, left and right ) are used as keys for the entire set of children, and the order of the objects keys is used to. meta tags with duplicate key attributes are automatically handled.

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