Javascript Map Object To Another Object

In order to add a new property to every object from the array of objects, the transformed object with a new property value has to be returned in the array.map () callback function. Javascript objects vs maps differences between javascript objects and maps: Get() gets the value for a key in a map:

Clear() removes all the elements from a map: Your post isn't clear, but i think you're trying to just merge two objects into one. Thus, we start with object.entries as before but, instead of using foreach to populate our new object, we map over the array, transforming each [key, value] to [key, newvalue] and pass the resulting array to object.fromentries.

Here is an example i wrote to show how you can use the spread operator to merge two objects and then log the key/values of the merged object:.

Const obj = object.fromentries (map). Set() sets the value for a key in a map: Therefore, the output of the function for this object should be −. Let object1 = { firstkey: