Is it possible to get all nested children?

Question

JavaScript

<Parent>
    <ALevel>
        <BLevel></BLevel>
    </ALevel>
</Parent>

Is it possible to Parentget and ALeveland BLevel?

Answer 1

There is an API for working with children: https://facebook.github.io/react/docs/top-level-ap... . Since children are just props, iterate through the tree recursively and collect elements:

function getChildren(children) {
  let elements = []
  if (!children) {
    return elements
  }

  React.Children.forEach(children, child => {
    elements = [ ...elements, child, ...getChildren(child.props.children) ]
  })

  return elements
}

Answer 2

Receive in what form?

Answer 3

Through recursion. There are many examples.

Answer 4

var pChilpren = document.querySelectorAll('Parent *');

or

var parent = document.getElementsByTagName('Parent'); //в случае если только один парент, вообще лучше через id 
var child = parent.querySelectorAll('*');