map in nodejs code example
Example 1: javascript map
array.map((item) => {
return item * 2
}
Example 2: javascript map
function listFruits() {
let fruits = ["apple", "cherry", "pear"]
fruits.map((fruit, index) => {
console.log(index, fruit)
})
}
listFruits()
Example 3: initialize a map js
let map = new Map()
map['bla'] = 'blaa'
map['bla2'] = 'blaaa2'
console.log(map)
Example 4: functions in map javascript
const map = new Map();
function foo() {
return "Hello World!";
}
map.set("foo", foo);
console.log(map.get("foo")());
Example 5: nodejs map
let wrongMap = new Map()
wrongMap['bla'] = 'blaa'
wrongMap['bla2'] = 'blaaa2'
console.log(wrongMap)
Example 6: javascript map
The map() method creates a new array with the results of calling a provided function on every element in the calling array.