map function is javascript code example
Example 1: javascript map array
const myArray = ['Sam', 'Alice', 'Nick', 'Matt'];
const newArray = myArray.map(name => {
return 'My name is ' + name;
});
console.log(newArray);
const anotherArray = myArray.map((value, index) => index + ": " + value);
console.log(anotherArray);
console.log(myArray);
Example 2: javascript map
function listFruits() {
let fruits = ["apple", "cherry", "pear"]
fruits.map((fruit, index) => {
console.log(index, fruit)
})
}
listFruits()
Example 3: how the map function works javascript
const array = [2, 5, 9];
let squares = array.map((num) => num * num);
console.log(array);
console.log(squares);
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: map javascript
var kvArray = [["clave1", "valor1"], ["clave2", "valor2"]];
var miMapa = new Map(kvArray);
miMapa.get("clave1");
console.log(Array.from(miMapa));
console.log(Array.from(miMapa.keys()));
Example 6: js map function
const exampleArray = ['aa','bbc','ccdd'];
console.log(exampleArray.map(a => a.length));