Kubadilisha Safu katika Kitanzi cha JavaScript

Vipengele vya safu vinaweza kubadilishwa katika vitanzi. Ili kufanya hivyo, unahitaji kuzipitia safu kwa kutumia kitanzi cha kawaida for. Hebu kwa mfano tuzidishe vipengele vya safu kwa 2:

javascriptlet arr = [1, 2, 3, 4, 5];

for (let i = 0; i < arr.length; i++) {
  arr[i] = arr[i] * 2;
}

console.log(arr); // itaonyesha [2, 4, 6, 8, 10]

Sasa tuongeze kila kipengele cha safu kwa moja:

javascriptlet arr = [1, 2, 3, 4, 5];

for (let i = 0; i < arr.length; i++) {
  arr[i]++;
}

console.log(arr); // itaonyesha [2, 3, 4, 5, 6]

Sasa tuongeze kila kipengele cha safu kwa 5:

javascriptlet arr = [1, 2, 3, 4, 5];

for (let i = 0; i < arr.length; i++) {
  arr[i] += 5;
}

console.log(arr); // itaonyesha [6, 7, 8, 9, 10]