Having trouble with Create a Hash Table challenge

JavaScript
1

Hi,

I got stack again… sorry.

Fails: Items are added using the hash function.

Hope I understand well this challenge and have to use hash() on key.

My code:

let called = 0;
const hash = string => {
    called++;
    let hashed = 0;
    for (let i = 0; i < string.length; i++) {
        hashed += string.charCodeAt(i);
    }
    return hashed;
};
const HashTable = function() {
    this.collection = {};
    
    // change code below this line
    this.add = function(key, value) {
        this.collection.hasOwnProperty(hash(key)) 
            ? this.collection[hash(key)][key] = value
            : this.collection[hash(key)] = {
                [key]: value
        };
    };
    
    this.remove = function(key) {
        if (key && this.collection.hasOwnProperty(hash(key))) delete this.collection[hash(key)][key];
    };
    
    this.lookup = function(key) {
        if (key && this.collection.hasOwnProperty(hash(key))) return this.collection[hash(key)][key] || null;
        return null;
    }
    // change code above this line
};
const myTable = new HashTable;
myTable.add("name", "csaba");
myTable.add("anme", "robin");
myTable.remove("anme");
console.log(myTable.lookup("anme"));
console.log(myTable);
5

Thank you,
I saved the hash() method in a constant. The code now pass the test.
const currentKey = hash(key);