For loop difference

Question

Can i get a detail explanation of the difference of "of" and "in" in for loop
For(let e of/in [array])

Answer 1

Tomoe

'in' gives you index of each value
'of' gives you each value of the array

If you want to get value using 'in' then you need to access with index

var arr = ['a', 'b', 'c', 'd']

for (var i in arr) {
console.log(i)
}

console.log("-----")

for (var j of arr) {
console.log(j)
}

console.log("------")

for (var k in arr) { //here k is index of each value
console.log(arr[k]) //accessing value using index
}