Question

This should be very easy but I don’t know how to do it.

I have this object:

var obj = eval(result);

Now I want to know how many properties contains to put it in a loop

var finalAmount = obj.length;

Now I go for the loop

for (var i in obj) {
    --- some other code in here

Now here the problem I need to do something when the loop reaches the final property of the obj, so this is what Ive tried:

if (i+1 == finalamount){
    //do something
} else {
    //do something else
}

so basically using the i as a pointer to compare it to the var that contains how many items there are and when finding the final one of the loop then do something…

Answer 1

In this case i is not necessarily numeric, and so i+1 may not give you the desired results. You should set up a separate counter variable that you increment at the end of each loop iteration.