Question

I have several options classes that have spaces

<option value="Divers RF" class="Divers RF">Divers RF</option>
<option value="France Bleu" class="France Bleu">France Bleu</option>

How can i replace the space with a _ in the class?

so the result would be:

<option value="Divers RF" class="Divers_RF">Divers RF</option>
<option value="France Bleu" class="France_Bleu">France Bleu</option>

and not only for theses 2 classes but for all classes that have spaces in it.

Answer 1

$("option").each(function() {
  $(this).attr("class", $(this).attr("class").replace(/ /g, '_'));
});