How to sum two object values in javascript

Question

I\'m stuck how i sum two object like this:

obj1 = { 
  \'over_due_data\': 10,
  \'text_data\': 5
} 

obj2 = {
  \'over_due_data\': 20,
  \'text_data\': 5
}
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Answer 1

Another possible solution, using Array#reduce.

var obj1 = {'over_due_data':10,'text_data':5}, obj2 = {'over_due_data':20,'text_data':5},
    obj = Object.keys(obj1).reduce(function(s,a) {
      s[a] = obj1[a] + obj2[a];
      return s;
    }, {})
    console.log(obj);