Fragments in ReactJS

React Fragments
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.

Syntax:

  

child1

child2

.. ..... .... ...

Example:

class App extends React.Component {   
render() {   
return (   
  

Welcome

You are in the world of ReactJS.

); } }

Importance of React Fragments:

  • The execution of code is faster with the use of React fragments as compared to the div tag.
  • Less memory is utilised with the use of React fragments as compared to the div tag.

Fragments Short Syntax:
For declaring fragments, there is another shorthand exists.

Example:

class Columns extends React.Component {   
render() {   
return (   
<>    

Welcome

You are in the world of ReactJS.

); } }

Keyed Fragments:
In ReactJS, Key is the only attribute that can be passed with the Fragments, as it is needed for mapping a collection to an array of fragments.

Example:

Function  = (props) {  
return (  
  
{props.items.data.map(item => (  
  

{item.brand}

{item.type}

{item.weight}

))}
) }