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

you can code it dynamically :

var resultObject={};
Object.keys(obj1).forEach(function(objectKey, index) {
    resultObject[objectKey]= obj1 [objectKey]+obj2[objectKey];

});

Answer 2

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);

Answer 3

try with simply use Object.keys() and Array#map() function

obj1 = {
  'over_due_data': 10,
  'text_data': 5
}
obj2 = {
  'over_due_data': 20,
  'text_data': 5
}
var obj ={}
Object.keys(obj1).forEach(function(a){
  obj[a] = obj1[a] +obj2[a]

})
console.log(obj)

Answer 4

Try something like this if you don't want to use loop

    obj1 = { 
      'over_due_data': 10,
      'text_data': 5
    } 
    
    obj2 = {
      'over_due_data': 20,
      'text_data': 5
    }
    var obj = {};
    obj['over_due_data'] = obj1['over_due_data'] + obj2['over_due_data']
    obj['text_data'] = obj1['text_data'] + obj2['text_data']

    console.log(obj)

Answer 5

Try this might be helpful

obj1 = {
  'over_due_data': 10,
  'text_data': 5
}
obj2 = {
  'over_due_data': 20,
  'text_data': 5
}
var obj ={}
Object.keys(obj1).map(function(a){
  obj[a] = obj1[a] +obj2[a]

})
console.log(obj)

Answer 6

I have used below snippet to sum the two objects even if any of them has additional properties.

This solution is based on Array.prototype.reduce and short-circuit evaluation

Object.keys({ ...obj1, ...obj2 }).reduce((accumulator, currentValue) => {
    accumulator[currentValue] =
        (obj1[currentValue] || 0) + (obj2[currentValue] || 0);
    return accumulator;
}, {});

var obj1 = {
  'over_due_data': 10,
  'text_data': 5,
  'some_add_prop': 80
};

var obj2 = {
  'over_due_data': 20,
  'text_data': 5,
  'add_prop': 100
};


const sumOfObjs = Object.keys({ ...obj1,
  ...obj2
}).reduce((accumulator, currentValue) => {
  accumulator[currentValue] =
    (obj1[currentValue] || 0) + (obj2[currentValue] || 0);
  return accumulator;
}, {});

console.log(sumOfObjs);