Tell us what’s happening:
Describe your issue in detail here.
I can not understand this
product *= arr[i]
, how does this code work, can you explain that to me
**Your code so far**
function sum(arr, n) {
// Only change code below this line
// Only change code above this line
}
function multiply(arr, n) {
let product = 1;
for (let i = 0; i < n; i++) {
product *= arr[i];
}
return product;
}
console.log(multiply([1,2,3], 3))
**Your browser information:**
User Agent is: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
The operator *= is similar to += or -=. Its a shortcut to taking a value and multiplying itself to something else. Basically, x *= 3 would be equivilent to x = x * 3.
For example.
let x = 5;
x *= 3; // this will take x * 3, and save it in x, so x = 3 * 5
console.log(x); //This will print 15
Now your multiply function is supposed to multiply the first n values in arr together using a loop, so for every value it uses product *= arr[i] to multiply that value in the array to product, therefore after the loop finishes, product will be all those values multiplies together. Hope that makes sense.