JAVASCRIPT

how to check all values of an array are equal or not in javascript

// how to check all values of an array are equal or not in javascript
const allEqual = (arr) => arr.every(val => val === arr[0]);
console.log(allEqual([1, 2, 3, 4, 5, 6])); // false
console.log(allEqual([1, 1, 1, 1])); // true

check if all array elements are equal

function myFunction( arr ) {
  return new Set(arr).size === 1
}