Map Function in Java Script

Map()

Map () create a new array with the result of calling function for every array element.It is a collection of elements where each element is stored as a Key, value pair. Map object can hold both objects and primitive values as either key or value.

Example:

//objects

var john  = {

    name:'i m john',

    age:24,

    isActive:true

}

var marry = {

    name:'i m marry',

    age:20,

    isActive:true

}

var amr = {

    name:'i m amar',

    age:29,

    isActive:false

}

//map is object it return itretable (smthing u can look over)

 let users= new Map()

users.set('john',john)//  'john user define'

users.set('marry',marry)

users.set('amr',amr)

console.log(users);

console.log(users.keys());

console.log(users.values());

console.log(users.size);

console.log(users.get('amr'));