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JavaScript Interacting with the DOM Responding to Events Listening for Events with addEventListener()

Samuel Kleos
Samuel Kleos
Front End Web Development Techdegree Student 12,719 Points

.getElementsByTagName() vs .querySelectorAll()

In practical terms, if I append an item to a new Nodelist that I want to store somewhere else on the page, what is the benefit of having a live node item, vs a static one?


Live Node Item: document.getElementsByTagName('li')[0]


Static Node Item: document.querySelectorAll('li:nth-child(1)')

Also is there a difference if I add event listeners to array items by looping over an HTML Collection vs Static Nodelist?

1 Answer

Travis Alstrand
Travis Alstrand
Treehouse Teacher

Hey there Samuel Kleos !

I was getting ready to type out a big response but I found these two pages which honestly explain the differences much better than I ever could :smiley:

They're both easy reads and shared more info than I was able to think of as well. I hope these shed new light!

Article on medium.com

Article on softauthor.com