Perform function in attr() callback?

Question

Not sure if I am doing this correctly or not.

Here is my .js:

var currentIMG;
$( \'.leftMenuProductButton\' ).hover(function () {

              


        

Answer 1

$("#swapImg").css("opacity", 0).attr("src", productImages[swapIMG])
         .on("load",function(){ //fires each time when image loaded
            $(this).fadeIn("slow");
         });

This will also properly.