title: Change children class with parent onClick in React?
body: <p>I have multiple parent components and within each parent component are nested children components. I'd like to have the class in the nested childrens' component change when a link in that parent component is clicked (a show/hide toggle type thing). I'm guessing this can be done by setting and changing state in the parent component on the click, but am not sure. Is this the correct way to handle this? </p>
  
  <p>Is it usually best practice to hold state in the root component (I should note that the parent component explained above is <strong><em>not</em></strong> the root). </p>
  
  <p>Any and all help is greatly appreciated. Thanks!</p>