Hello, I have a problem in Javascript that I really cant figure out, I've tried for days! here it goes:

I need to iterate through a form and get all the elements that has a class like
"required" and then, save this elements id, because I have label elements that has a for="" tag with the same as the id for the input/dropdown in the form. To all these labels I need to apply a "*" in the end of the label. And all this in an onload function.

I have tried everything I can come up with but now I'm close to giving up so now I need help, how can I get these values and do this?

Very thankful for help!