简体   繁体   中英

What is the React equivelant of Angulars 'ng-container'

Instead of having a div element, I want an element like 'ng-container' in Angular to avoid useless div elements in the DOM.

What is the React equivalent of Angulars 'ng-container' ?

Explanation of ng-container

You can use React.Fragment

<React.Fragment>
    "Rest of elements here"
</React.Fragment>

Fragments let you group a list of children without adding extra nodes to the DOM.

function ChildA() {
  return (
    <h5>Child A</h5>
  );
}

function ChildB() {
  return (
    <h5>Child B</h5>
  );
}

function ChildC() {
  return (
    <h5>Child C</h5>
  );
}

Method-1: React Fragments helps to add empty container to wrap list of children inside render method.

render() {
  return (
    <React.Fragment>
      <ChildA />
      <ChildB />
      <ChildC />
    </React.Fragment>
  );
}

Method-2 A common pattern is for a component to return a list of children by wrapping children with any container element eg div,p

render() {
  return (
     <div>
      <ChildA />
      <ChildB />
      <ChildC />
    </div>
  );
}

Method-3 There is a new, shorter syntax you can use for declaring fragments.You can use <> the same way you'd use any other element except that it doesn't support keys or attributes.

render() {
  return (
     <>
      <ChildA />
      <ChildB />
      <ChildC />
    </>
  );
}

Method-4 React 16.0 added support for returning an array of elements from a component's render method. Instead of wrapping the children in a DOM element, you can put them into an array:

function App() {
  return (
    [
      <ChildA />,
      <ChildB />,
      <ChildC />
    ]

  );
}

We can use empty <> tag as well

<>
  Rest of markup here
</>

The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM