Looping through divs in a master div to set opacity

Hello all. I’m not at all versed with javascrip but since is quite similar to AS3, which I have been learning for the last three months I have an understanding of how it works.

I need your help with the following: I have around thirty divs inside a master div. These divs contain each one a dot image of a dotted line. I want to create an animation with this dots so each one will set its opacity from 0 to 1 a tenth of a second one after the other. I know this should be very simple to do with a loop but I don’t know how to loop through the divs inside a master div.

I have a few lines of code from jquery to set opacity but other than that I dont know what to do.

    $(document).ready(function(){
                        
        $(".div1").animate({opacity: "-400"}, 1)
        .animate({opacity: "0.01"}, 1000)
        .animate({opacity: "1"}, 2000)
    });

Any help would be, as always, really appreciated.

Thanks Kirupians!