Uncaught TypeError: Cannot read property 'photos' of undefined

Question

This code:

$.each(variant['photos'], function( index, object ) {
            object['idx'] = index;
            if(index == 0) object['active'] = true;
        });

produces following error:

error Uncaught TypeError: Cannot read property 'photos' of undefined

Answer 1

Well, that error message is pretty self explanatory. You are attempting to read a property of something that isn't defined. In this case, the error comes from variant['photos'] . You haven't defined variant .