javascript - Extend observableArray with data from a second source -

i create observablearray ajax source working pretty well. want extend of array items data second source.

for example:

{ id: 1, name: 'hugo', age: 18 } 

... later want add:

{ id: 1, city: 'new york', country: 'us' } 

... should result in:

{ id: 1, name: 'hugo', age: 18, city: 'new york', country: 'us' } 

is possible ko.mapping plugin? did tests result mapped properties of items in array have been replaced properties second source.

---

solution

well, pretty easy solve. when adding new data mapping plugin have check key. existing data extended additional data.

ko.mapping.fromjs(modifications, {     key: function(data) {         return ko.unwrap(data.id);     } }, originaldata); 

if properties aren't observables can use ko.utils.extend.

var original = { id: 1, name: 'hugo', age: 18 }; var modifications ={ id: 1, city: 'new york', country: 'us' };   var result2 =  ko.utils.extend(original,  modifications);  console.log(json.stringify(result2)); 

see fiddle