JAVASCRIPT

is array equal javascript

// comparing arrays to check for equality - method 1
const a = [1, 2, 3];
const b = [4, 5, 6];
const c = [1, 2, 3];

function arrayEquals(a, b) {
    return Array.isArray(a) &&
        Array.isArray(b) &&
        a.length === b.length &&
        a.every((val, index) => val === b[index]);
}

arrayEquals(a, b);
// false
arrayEquals(a, c);
// true

check array values equal js

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