get the last iteration in jquery each

Question

I have the following code that I am going through the tables columns and if its the last column I want it to do something different. Right now its hard coded but how can I change so it automatically knows its the last column

$(this).find('td').each(function (i) { 
    if(i > 0) //this one is fine..first column
    { 
        if(i < 4)  // hard coded..I want this to change 
        {
            storageVAR += $(this).find('.'+classTD).val()+',';
        }
        else
        {
            storageVAR += $(this).find('.'+classTD).val();
        }
    }
});

Answer 1

If you want access to the length inside the .each() callback, then you just need to get the length beforehand so it's available in your scope.

var cells = $(this).find('td');
var length = cells.length;
cells.each(function(i) {
    // you can refer to length now
});