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JavaScript JavaScript and the DOM Making Changes to the DOM Get and Set Content with textContent and innerHTML

Michael Davis
Michael Davis
6,992 Points
Posted by Michael Davis
Michael Davis
6,992 Points

My .addEventListener is returning null. I cant figure out why.

Here's the code I copied from the video maybe I looked over something but I get an error in the console saying my .addEventListiner cannot read properties of null.

const btnUpdate = document.querySelector ('.btn-main');

btnUpdate.addEventListener('click', () => {

const headline = document.getElementById ('headline');
const input = document.querySelector ('.input-main');

headlin.textContent = input.value });

2 Answers

jb30
jb30
44,805 Points

Try changing headlin.textContent to headline.textContent

Michael Davis
Michael Davis
6,992 Points
Michael Davis
Michael Davis
6,992 Points

That was definitely a part of it Thank you! The other error I noticed, and maybe it was something I missed in a previous lesson but in the btnUpdate variable they told us to link it to the class ('.btn-main') but when I checked the index the button element didn't have a class attribute so I ended up changing it to the ID attribute ('#btn-main'). I don't know if this was a mistake in the class or if I just missed something but it took me a few min to figure it out,

gregperry3
gregperry3
7,660 Points

Same thing just happened to me. btn-main was the id of that <button> instead of a class. I could have missed that being changed in a previous lesson too.