extra null in array

[petershaw]

I merge this 5 objects to one:

{"weather":{"place":"Passau"}}

{"weather":{"temperature":{"value":"13","unit":"°C","conditions":"05"}}}

{"weather":{"forcastday":[{"temperatureMax":"18.3","temperatureMin":"13.2","unit":"°C","conditions":"09","day":"2016-07-02T22:00:00+00:00P1D"}]}}

{"weather":{"forcastday":[{"temperatureMax":"22","temperatureMin":"14","unit":"°C","conditions":"02","day":"2016-07-03T22:00:00+00:00P1D"}]}}

{"weather":{"forcastday":[{"temperatureMax":"24.2","temperatureMin":"15.4","unit":"°C","conditions":"02","day":"2016-07-04T22:00:00+00:00P1D"}]}}

with:

data = myExtend.apply(this, data);

The result has an extra null in the array:

{"weather":{"place":"Passau","temperature":{"value":"14","unit":"°C","conditions":"05"},"forcastday":[null,{"temperatureMax":"18.3","temperatureMin":"13.2","unit":"°C","conditions":"09","day":"2016-07-02T22:00:00+00:00P1D"},{"temperatureMax":"22","temperatureMin":"14","unit":"°C","conditions":"02","day":"2016-07-03T22:00:00+00:00P1D"},{"temperatureMax":"24.2","temperatureMin":"15.4","unit":"°C","conditions":"02","day":"2016-07-04T22:00:00+00:00P1D"}]}}

See the "forcastday":[null,{"temperatureMax": section.

I can quick fix it for this example, when i reverse the data array:

data = myExtend.apply(this, data.reverse());

But this in not a solution, because i don't know how the array is structured. How can I fix the extra null?