Mar 28, 2020 · Because you're adding CSS to an element via ID, and then trying to overwrite that CSS by adding additional CSS via a class, it doesn't work. This happens because IDs get …

Dec 22, 2020 · First I wanted to use "classList.toggle" for the class that was in CSS. Since it didn't work as I wanted, I selected the button with Id; Then instead of using "classList.toggle" for the …

May 23, 2022 · Some Stackoverflow users have suggested using classList.toggle instead of the if and else conditions. So I'm trying to get it to work in my dropdown menu, but I don't …

Toggle between adding and removing a class name from an element with JavaScript.

Nov 14, 2024 · If a toggle functionality in JavaScript works only on the second click and not the first, it's often due to issues with the initial state or how event handlers are managing the …

Apr 3, 2025 · Although the classList property itself is read-only, you can modify its associated DOMTokenList using the add(), remove(), replace(), and toggle() methods. You can test …

Apr 5, 2020 · userList.addEventListener('click', function(ev) { if (ev.target.tagName === 'LI') { ev.target.classList.toggle('completed'); } }); However, when I click on the li, it changes color to …

The classList property is read-only, but you can use the methods listed below, to add, toggle or remove CSS classes from the list:

Aug 4, 2016 · The line this.classList.toggle('active'); is adding the class but not removing it. Any idea why?

Apr 16, 2022 · It could be a loading order issue, that means for example the Javascript is loaded before the html is completely loaded and the js cannot find the html elements There are …