If property values of objects are equal in two array of objects then merge those objects into single object

Question

If x property value matches in both the objects in 2 arrays. merge those objects into single object.

var data3= [{"x":"Mfg1","y":83840.901245},{"x":"Mfg2","y":74804.973325},{"x":"Mfg3","y":81869.98221666666},{"x":"Mfg4","y":36503.152352499994}];
var data4 = [{"x":"Mfg1","y":83840.901245},{"x":"Mfg2","y":74804.973325},{"x":"Mfg8","y":51869.98221666666},{"x":"Mfg4","y":36503.152352499994}];

output array should be:

[{"x":"Mfg1","y":83840.901245},{"x":"Mfg2","y":74804.973325},{"x":"Mfg3","y":81869.98221666666},{"x":"Mfg4","y":36503.152352499994},{"x":"Mfg8","y":51869.98221666666}]

Plus a proper formatting could help us better understand your code ;) — sp00m
– sp00m, Commented Jun 28, 2018 at 10:43
Feels like Lodash.. But please read this: stackoverflow.com/help/how-to-ask — GuyT
– GuyT, Commented Jun 28, 2018 at 10:46

Jonas Wilms · Accepted Answer · 2018-06-28 10:58:05Z

1

You could use the stringified version of theobject to check for duplicates:

const unique = (getKey, s = new Set) => el => !s.has(getKey(el)) && s.add(getKey(el));

const result = data3.concat(data4).filter( unique(el => JSON.stringify(el)) );

answered Jun 28, 2018 at 10:58

Jonas Wilms

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1 Comment

Eswar Over a year ago

Thanks a lot..jonas

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