Here is the code I have. I am pretty new to javascript still so I don't see why adding the function stops the for statement from incrementing the integers.
const arr = [10,10,16,12]
function incrementByOne(arr) {
// arr is an array of integers(numbers), Increment all items in the array by
// return the array
for (const i = 0; i < arr.length; i++){
arr[i] += 1;
}
return arr
}
Any help would be greatly appreciated.
const arr = [10,10,16,12]
function incrementByOne(arr) {
// arr is an array of integers(numbers), Increment all items in the array by
// return the array
for (let i = 0; i < arr.length; i++){
arr[i] += 1;
}
return arr
}
let a = incrementByOne(arr)
console.log(a)
I ran your code under Node.js:
Code:
'use strict';
const arr = [10,10,16,12]
function incrementByOne(arr) {
for (const i = 0; i < arr.length; i++) {
arr[i] += 1;
}
return arr
}
console.log(incrementByOne(arr));
Output:
$ node incr.js
incr.js:6
for (const i = 0; i < arr.length; i++){
TypeError: Assignment to constant variable.
at incrementByOne (incr.js:6:37)
$
As you can see, it complains that you are trying to change the value of i which your code said was constant. Write let i = 0 for a non-constant value.
Code:
'use strict';
const arr = [10,10,16,12]
function incrementByOne(arr) {
for (let i = 0; i < arr.length; i++) {
arr[i] += 1;
}
return arr
}
console.log(incrementByOne(arr));
Output:
$ node incr.js
[ 11, 11, 17, 13 ]
$
You should use let i = 0 instead of const i= 0 to initilize the loop iteration counter i
const arr = [10,10,16,12]
function incrementByOne(arr) {
// arr is an array of integers(numbers), Increment all items in the array by
// return the array
for (let i = 0; i < arr.length; i++){
arr[i] += 1;
}
return arr
}
Then call incrementByOne function
incrementByOne(arr);