How can I toggle an element's attributes using pure JavaScript?

Question

Most of the similar questions that arose as I wrote this one were like this (where the user wishes to toggle an element's class using pure JS) or this (where the user wishes wishes to toggle other attributes using jQuery)

My question is a mixture of the two. I am aware that the el.classList.toggle() method exists for toggling an element's class using pure JS, but I wish to toggle different attributes using pure JS, specifically the checked attribute of some radio buttons, since this (annoyingly) does not change when different options are selected.

Is it possible to toggle the checked attribute on my two radio buttons with pure JS (by toggling I mean remove the attribute from the element altogether if it is present, and add it if it is not)?

radios = document.getElementsByName("Floor");
for (i = 0; i < radios.length; i++) {
    radios[i].addEventListener('change', function () {
        this.(/*checked attribute*/).toggle()
    }, false);
}

<input checked id="Floor" name="Floor" type="radio" value="0">Ground Floor
<input id="Floor" name="Floor" type="radio" value="1">First Floor

Edit: The possible duplicate question mentioned in the comments does not quite solve my problem. I don't need to change which radio button appears checked, I just want to toggle the checked attribute, to make it easier for me to reference the button that is checked later on in the code. Of course, if there is another, easier way of doing this, I'm all ears.

Answer 1

There actually is an Element.toggleAttribute method for boolean attributes. MDN Docs.

However, since it is not supported in IE, you might want to add the MDN Polyfill

Answer 2

there is no toggle method for attribute.

You can use:

elm[elm.hasAttribute('hidden')?'removeAttribute':'setAttribute']('hidden', '')

or

elm.hasAttribute('hidden') ? removeAttribute('hidden') : setAttribute('hidden')

EDIT: there is now toggle method for attribute.

elm.toggleAttribute('hidden')

https://developer.mozilla.org/docs/Web/API/Element/hasAttribute