Question

I’m having an each loop though the objects,

And in it, I create some images, and I want to put into them a data of the reference to an image from the last iteration.

For example:

.each((function(some_data){ return function(i, obj){

    var prev='???'; // how do I retrieve the value from the last cycle?
    var image=new Image();
        image.data('prev',prev);
        prev=image;
                // how do I pass the value to next cycle?
    }})(some_data));

Answer 1

Before your .each call, you define the variable in the outer scope..

var prev=null;
collection.each(function(idx, val){
   alert("Prev should have value from previous iteration (or null):" + prev);
   var image=new Image();
   image.data('prev',prev);
   prev=image;
 })(some_data));