Lodash union of arrays of objects

Question

I\'d like to use the _.union function to create a union of two arrays of objects. Union works with arrays of primitives only as it uses === to examine if two va

Answer 1

1. Compare objects using a key property:-

_.unionBy(array1,array2,'propname');

2. Compare objects using all key property:-

_.unionWith(array1,array2, _.isEqual);

3. Compare objects using a string key property in case insensitive way:-

_.unionWith(array1,array2, function(obj,other){ return obj.propname.toLowercase() === other.propname.toLowercase(); });

propname is name of key property of your object.