js function to chech if two elements in array are the same code example
Example 1: check if array has same values javascript
const allEqual = arr => arr.every(v => v === arr[0]);
allEqual([1,1,1,1]); // true
Example 2: check array values equal js
[1,1,1,1].every( (val, i, arr) => val === arr[0] ) // true