className only changing every other class

Question

I\'m performing a small text with JavaScript with the getElementsByClassName() and I am getting some unwanted results. I would like the script to change each CS

Answer 1

You have already some good solutions.

I think that the best one is the one from Rick Hitchcock.

But a solution that I often use, to be safe when doing things like that, is to travel the collection backwards

var nmax = blockSet.length - 1;
for (var n=nmax; n>=0; n--) {
    blockSet[n].className = 'block-selected';
}

That isolates you from changes in the collection