assign unique value to div using innerHTML

Question

I have this:

function dynamicSet() {
    introNewSection.innerHTML += '<div class="col-lg-5 mb-lg-0 mb-4" id="intro">
}

but I want to dynamically set the id. so instead of intro, I was it that everything this funciton is called, it gives the new iteration of this innerHTML a unique value. Is this possible?