Array.prototype.some()

const array = [1, 2, 3, 4, 5];

// Checks whether an element is even
const even = (element) => element % 2 === 0;

console.log(array.some(even));
// Expected output: true

//  
some((element) => { /*  */ })
some((element, index) => { /*  */ })
some((element, index, array) => { /*  */ })

//  
some(callbackFn)
some(callbackFn, thisArg)

//   
some(function (element) { /*  */ })
some(function (element, index) { /*  */ })
some(function (element, index, array) { /*  */ })
some(function (element, index, array) { /*  */ }, thisArg)

function isBiggerThan10(element, index, array) {
  return element > 10;
}

[2, 5, 8, 1, 4].some(isBiggerThan10); // false
[12, 5, 8, 1, 4].some(isBiggerThan10); // true

[2, 5, 8, 1, 4].some((x) => x > 10); // false
[12, 5, 8, 1, 4].some((x) => x > 10); // true

const fruits = ["apple", "banana", "mango", "guava"];

function checkAvailability(arr, val) {
  return arr.some((arrVal) => val === arrVal);
}

checkAvailability(fruits, "kela"); // false
checkAvailability(fruits, "banana"); // true

const TRUTHY_VALUES = [true, "true", 1];

function getBoolean(value) {
  if (typeof value === "string") {
    value = value.toLowerCase().trim();
  }

  return TRUTHY_VALUES.some((t) => t === value);
}

getBoolean(false); // false
getBoolean("false"); // false
getBoolean(1); // true
getBoolean("true"); // true

console.log([1, , 3].some((x) => x === undefined)); // false
console.log([1, , 1].some((x) => x !== 1)); // false
console.log([1, undefined, 1].some((x) => x !== 1)); // true

const arrayLike = {
  length: 3,
  0: "a",
  1: "b",
  2: "c",
};
console.log(Array.prototype.some.call(arrayLike, (x) => typeof x === "number"));
// false