How to remove a class from elements in pure JavaScript?

Question

I would like to know how to select all elements with class names \"widget\" and \"hover\" and then remove class \"hover\" from these elements.

I have the following J

Answer 1

It's 2020... keep it simple.

Times have changed and now the cleanest and most readable way to do this is:

Array.from(document.getElementsByClassName('widget hover')).forEach((el) => el.classList.remove('hover'));

If you can't support arrow functions then just convert it like this:

Array.from(document.getElementsByClassName('widget hover')).forEach(function(el) { 
    el.classList.remove('hover');
});

Additionally if you need to support extremely old browsers then use a polyfil for the forEach and Array.from and move on with your life.

Answer 2

Find elements:

var elements = document.getElementsByClassName('widget hover');

Since elements is a live array and reflects all dom changes you can remove all hover classes with a simple while loop:

while(elements.length > 0){
    elements[0].classList.remove('hover');
}

Answer 3

Given worked for me.

document.querySelectorAll(".widget.hover").forEach(obj=>obj.classList.remove("hover"));

Answer 4

var elems = document.querySelectorAll(".widget.hover");

[].forEach.call(elems, function(el) {
    el.classList.remove("hover");
});

---

You can patch .classList into IE9. Otherwise, you'll need to modify the .className.

var elems = document.querySelectorAll(".widget.hover");

[].forEach.call(elems, function(el) {
    el.className = el.className.replace(/\bhover\b/, "");
});

The .forEach() also needs a patch for IE8, but that's pretty common anyway.

Answer 5

This might help

let allElements = Array.from(document.querySelectorAll('.widget.hover'))
for (let element of allElements) {
  element.classList.remove('hover')
}

Answer 6

elements is an array of DOM objects. You should do something like this

for (var i = 0; i < elements.length; i++) {
   elements[i].classList.remove('hover');
}

ie: enumerate the elements collection, and for each element inside the collection call the remove method