Is this the ul element?
document.querySelector('list');
There is no such thing as a list element so your selector should likely be a class or id. .list or #list, or an element selector ul.
Also, this evpreventDefault(); should be e.preventDefault();
I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (’).