Create a pause inside a while loop in Javascript

I would like to create a pause inside a while loop so that I can create n animations that each appear 3 seconds after the other.

I've tried the following, but it doesn't work. Would love to have someone show me what I'm doing wrong.

i=0;
while (i < n) {
    someanimation();
    setTimeout(function(){
        i++;
    }, 3000);
     
};