Help with getting sum of array

Question

Hi there
I want to calculate the sum of an array from an input element. So, what is wrong with this code?

let items = [];
function total() {
pricevalue = document.getElementById('price').value; items.push(pricevalue);
let sum = 0;
for (let i = 0; i < items.length; i++) { sum += items[i] + pricevalue; }

document.getElementById("total").innerHTML = sum;
}
https://code.sololearn.com/WwNoyJ0BM1XF/?ref=app

Answer 1

Fun (for me and some :P) fact: when you grab a value from an element, it is as a string. That is why, you will need to use the parseInt() method on either the declaration of the variable pricevalue ("pricevalue = parseInt(...);") or when pushing to the items array (items.push(parseInt(...);). The result will add the numbers mathematically instead of performing concatenation.

Answer 2

Looks right to me except i don't understand the point of adding pricevalue two times . Is there any error you are receiving ?

Answer 3

I have attached the project.

Answer 4

that's not a "fun fact"...
that's the way of values of elements (and quite all properties except such as 'checked' wich are boolean) are handled in html: as string (in same ways as you get input in any language, until you have some specific method wich handle for you the cast to another types)