How to check if html element contains every class I specify in JavaScript

Question

I want to check if some html element contains three classes, or some of them containts another two with different names. How can I do that in JavaScript? If there is not something pure js, then jquery suggestions are welcomed.

I tried matches, but that checks some of them not all With contains that doesn't work too to check if all of them are on that element :S

    for(let i = 0;i < allButtons.length;i++)
    {


          if(allButtons[i].matches('.forwardButton,try') && allButtons[i].disabled == false)
        {
            // // alert("b")
            // if(objectWithSameOrderWhenTheyAreAnswered[`arrayWithSameOrderWhenTheyAreAnswered${answersCounter}`].length != 4)
            // {
            //     objectWithSameOrderWhenTheyAreAnswered[`arrayWithSameOrderWhenTheyAreAnswered${answersCounter}`].push(answers[i])
            // }  
        }

Answer 1

Try the following:

 var el = document.getElementsByTagName('div')[0]; console.log(el.classList.contains('class2')); console.log(el.classList.contains('class3')); 

 <div class="class1 class2 class4"></div>