دوال المصفوفات متقدمة في لغة جافا سكريبتJava Script Array Advanced Methods

Math.max.apply(0, [1,2,3]); // Will also return 3

const fruits = ["Banana", "Orange", "Apple", "Mango"];
const keys = fruits.keys();

for (let x of keys) {
  text += x + "<br>";
}

const numbers = [4, 9, 16, 25, 29];
let first = numbers.find(myFunction);

function myFunction(value, index, array) {
  return value > 18;
}

const numbers = [4, 9, 16, 25, 29];
let first = numbers.findIndex(myFunction);

function myFunction(value, index, array) {
  return value > 18;
}

Math.max(1,2,3);  // Will return 3

Math.max.apply(null, [1,2,3]); // Will also return 3

Math.max.apply(Math, [1,2,3]); // Will also return 3

const fruits = ["Banana", "Orange", "Apple", "Mango"];
const f = fruits.entries();

for (let x of f) {
document.write(x + "<br>");
}

const ages = [32, 33, 16, 40];

ages.every(checkAge)     

function checkAge(age) {
  return age > 18;
}

const ages = [32, 33, 16, 40];

ages.filter(checkAdult)    
function checkAdult(age) {
  return age >= 18;
}

const ages = [3, 10, 18, 20];

function checkAge(age) {
  return age > 18;
}

function myFunction() {
  document.getElementById("demo").innerHTML = ages.find(checkAge);
}

const numbers = [4, 9, 16, 25];
const newArr = numbers.map(Math.sqrt)

const ages = [3, 10, 18, 20];

ages.findIndex(checkAge)   /* Returns 3 */

function checkAge(age) {
  return age > 18;
}

const fruits = ["apple", "orange", "cherry"];
fruits.forEach(myFunction);

let groups = Array.from("ABCDEFG");
/* Returns [A,B,C,D,E,F,G]  */