How To Add A New Object Keyvalue Pair To An Array In
Transforming objects. objects lack many methods that exist for arrays, e. g. map, filter and others. if we’d like to apply them, then we can use object. entries followed object. fromentries:. use object. entries(obj) to get an array of key/value pairs from obj. ; use array methods on that array, e. g. map. use object. fromentries(array) on the resulting array to turn it back into an object. If the value doesn’t have an undefined value, we add the item as a new property to the newobject using the array index as its key value. if you console. log the new object, you’ll see that the same object as the first method is returned. 3. reduce the last example we’ll show you is the reduce method.