why this code is NOT correct?

Question

let obj = [1,5,8];
for (let v in obj) {
console.log(v);
}

Answer 1

Bilal LAIB , if you need to print each value in the array you should use for... of loop, instead of for... in which iterates through the indexes.

Answer 2

There are different ways to iterate through objects/arrays. Some of these ways are:

- Using Object
Values:
let myArray = [1,5,8];

Object.values(myArray).forEach(Value => {
console.log(Value) // Logs: 1, 5, and 8.
});

Keys:
let myArray = [1,5,8];

Object.keys(myArray).forEach(Key => {
console.log(Key) // Logs: 0, 1, and 2.
});

- For loops:
let myArray = [1,5,8];
for (let Index=0;Index < myArray.length;++i) {
let Value = myArray[Index];
console.log(Index, Value) --> Logs: (0, 1), (1, 5), (2, 8)
}

my "explanation" is pretty bad, but I hope you get the point of it.