jQuery .addclass to multiple div

Question

I am trying to apply the class ".lightGray" that i defined earlier on to div 4,5,7,and this current one. Not sure what I am doing wrong!

$("#Div8").click(function(){$("#Div4", "#Div5","#Div7","#Div8").addclass(".lightGray");});

Answer 1

In all DIVS these I put a default class: changeClass, and maintain their individual IDS.

A instead of doing $("#Div4","#Div5","#Div7","#Div8") would suffice to make $(".changeClass).addClass("lightGray");

Classes can be used in more than one element at the same time and thus can manipulate several of these elements at once, saving time and lines of code.