如何从已解决的承诺中获取价值

I am new to Angular and having hard time to understand how to get the value from a resolved promise. I used $q.all([element1.$promise, e2.$promise]). I got the element1 which is a json object. For, element2 which is a scalar containing 2.0. I tried element[1] just like element[0] but it contains no property, so I don't know how to get the value. I tried .val, .data, etc. I know both the web api and angular are getting 2.0.I am new to Angular and having hard time to und