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JavaScript JavaScript and the DOM (Retiring) Traversing the DOM Using parentNode to Traverse Up the DOM

Victor Gentile
Victor Gentile
4,996 Points
Posted by Victor Gentile
Victor Gentile
4,996 Points

"using parentNode to traverse up the DOM." how can I add a Remove button to each new item thats added when item appears

I understand what was taught... trying to have a remove button that appears with each new item that I add to list.

4 Answers

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

You're getting ahead of the course.

Just hold on. Adding the buttons will be covered in the Getting All Children of a Node with children video coming up later in this stage of the course.

Victor Gentile
Victor Gentile
4,996 Points
Victor Gentile
Victor Gentile
4,996 Points

Thanks for your time and consideration. I guess that's not a bad thing... thinking ahead about how to add more functionality into my code....obviously it came just a bit later.

Andrew Federico
Andrew Federico
7,498 Points
Andrew Federico
Andrew Federico
7,498 Points

I had the same concern. Not sure how they will do it later, but I used createTextNode in conjunction with what we already learned.

addItemButton.addEventListener('click', () => {
  let ul = document.getElementsByTagName('ul')[0];
  let li = document.createElement('li');
  let btn = document.createElement('button');
  let tn = document.createTextNode('Remove');
  li.textContent = addItemInput.value;
  ul.appendChild(li);
  addItemInput.value = '';
  li.appendChild(btn);
  btn.appendChild(tn);
});
Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

An easier way is to assign your text to the textContent property of the element:

btn.textContent = 'Remove';
Andrew Phythian
Andrew Phythian
19,747 Points
Andrew Phythian
Andrew Phythian
19,747 Points

This is my working solution.

If you amend the line

li.textContent = addItemInput.value;

to 

li.innerHTML = addItemInput.value + "<button>Remove</button>";

you should get a Remove button that removes the element you have added.

I haven't yet advanced to the point in this course where this is covered, I anticipate the solution will be different to mine.

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Just be aware that a button element added this way won't actually be functional without additional code.

Andrew Phythian
Andrew Phythian
19,747 Points

The code I posted worked until we added the 'Up' and 'Down' buttons. However, after adding class='remove' to the button

li.innerHTML = addItemInput.value + "<button class='remove'>Remove</button>";

it appears to remove successfully again.

Was that the additional code you meant?

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Yes, assuming you already have a delegated handler that's looking for that class.