The JavaScript Interview Handbook: 100+ Interview Questions/

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Solution Review: Is a Child?

Solution Review: Is a Child?

This lesson will explain the solution to the problem in the previous lesson.

We'll cover the following...

Solution #

Explanation #

Let’s discuss the JavaScript code for isChild.

Javascript (babel-node)
function isChild(parent, child){
 
  while(child.parentNode){ 
    if(child.parentNode == parent)
      return true;
    else
      child = child.parentNode
  }
  return false
}

It takes two parameters, the parent and the child element. First, the function checks if the child has a ...