In JavaScript, a brand new object known as Map was launched within the ES6 model. A map is a set of components the place every ingredient is saved in a key, worth pair. Map objects can retailer each objects in addition to primitive knowledge sorts. The weather of a map are iterable. Parts are all the time iterated within the insertion order.
The weather in a map are ordered which implies that the weather may be iterated within the order they’re inserted.
Syntax:
new Map([it])
Instance 1: On this instance, we’ll create a brand new map object and iterate over it to test how the weather are ordered.
Javascript
|
|
Output:
Key = identify, Worth=Rahul Key = age, Worth=20 Key = Nation, Worth=India
Instance 2: On this instance, we’ll save the keys and values of the map in two totally different arrays
Javascript
|
|
Output:
(3) ['name', 'age', 'Country'] (3) ['Rahul', 20, 'India']
Clarification: We will see that the weather keep the order they’re entered within the map so so the insertion in new arrays follows the identical order as that of the map
