在不同的时间向一个 function 添加两个不同的类 javascript

Question

I have a JavaScript code and there is one function that I want to add two class to it, but if I add them in the same function line the other class don't work, and when I write each one in the same function but different lines the second class works only, all what I want here is add the first class and add the second class after like 5sec? I don't know if there is any way to make it work but I hope there is.

this is when the first class only works:

function open() {
        en.addClass('op').addClass('bo-ac')
            .removeClass('cl');
    }  

this is when the second class only works:

function open() {
            en.addClass('op')
                .removeClass('cl');
        }  

 function open() {
         $('.bo').addClass('bo-ac')
    }

Answer 1

@Nothere. I'm not sure, but is this something you are looking for?

function open() {
    en.addClass('op').removeClass('cl');
    setTimeout(function() {
       en.addClass('bo-ac')
    }, 0)
}