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 array values equal js

[1,1,1,1].every( (val, i, arr) => val === arr[0] )   // true

js check if all array values are the same

const allEqual = arr => arr.every( v => v === arr[0] )
allEqual( [1,1,1,1] )  // true