Vanilla [removed] Is there a way to toggle multiple CSS-classes in one statement?

Question

I use these JavaScript-code to change classes in my script:

var toggleDirection = function() {
  group.classList.toggle(\'left-to-right\');
  group.classLis         


        

Answer 1

You can extend the DOMTokenList object with the following multiToggle

if (window["DOMTokenList"]) //check if DOMTokenList is an existing object.
{
//multitoggle
DOMTokenList.prototype.multiToggle = function()
{
    if (arguments.length > 0) // there needs to be at least one object
    {
        for (argument in arguments) //loop all arguments
        {
            var argument = arguments[argument];
            //All primitives are allowed as input (Symbol not included). If not a primitive, raise error.
            if (Object.prototype.toString.call(argument) !== "[object Undefined]" && Object.prototype.toString.call(argument) !== "[object Null]" && Object.prototype.toString.call(argument) !== "[object String]" && Object.prototype.toString.call(argument) !== "[object Number]" && Object.prototype.toString.call(argument) !== "[object Boolean]")   
            {
                throw new SyntaxError;
            }
            else
            {
                if (this.contains(argument)) //check if classList contains the argument.
                {
                    this.remove(argument); //if so remove
                }
                else
                {
                    this.add(argument); //if not add
                }                   
            }
        }
    }
    else
    {
        throw new Error("The argument is not optional");
    }
    return undefined; //return undefined as with add and remove.
}       
}

multiToggle does not have the force ability of the original toggle. It just turns class names on and off for as many arguments as supplied.

Warning, expanding fixed Objects can cause troubles in the future . When an object gets deprecated or changed your functionality could break, requiring to more maintenance.