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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Using previousElementSibling and insertBefore

Brian Patterson
Brian Patterson
19,588 Points
Posted by Brian Patterson
Brian Patterson
19,588 Points

I am a bit confused

I have a few questions about this function.

listUL.addEventListener('click', (event) => {
    //this saying the if the html element is button
    if (event.target.tagName == 'BUTTON') {
      //if the class name is 'remove'.
      if (event.target.className == 'remove'){
        //I am unsure what this means.
      let li = event.target.parentNode;
      //I am unsure what this means.
      let ul = li.parentNode;
      //this removes the child
      ul.removeChild(li);
    }

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

Does this clear it up?

let li = event.target.parentNode; :point_left: get the list item (li) element that this button is in
let ul = li.parentNode; :point_left: get the unordered list (ul) that the list item is in

Brian Patterson
Brian Patterson
19,588 Points
Brian Patterson
Brian Patterson
19,588 Points

Brilliant Steven. Can give me any tips on how best to learn about the DOM.

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

I really enjoyed the course you're taking right now. There's also DOM Scripting By Example.