## Sum the properties

importance: 5

There is a `salaries`

object with arbitrary number of salaries.

Write the function `sumSalaries(salaries)`

that returns the sum of all salaries using `Object.values`

and the `for..of`

loop.

If `salaries`

is empty, then the result must be `0`

.

For instance:

```
let salaries = {
"John": 100,
"Pete": 300,
"Mary": 250
};
alert( sumSalaries(salaries) ); // 650
```

```
function sumSalaries(salaries) {
let sum = 0;
for (let salary of Object.values(salaries)) {
sum += salary;
}
return sum; // 650
}
let salaries = {
"John": 100,
"Pete": 300,
"Mary": 250
};
alert( sumSalaries(salaries) ); // 650
```

Or, optionally, we could also get the sum using `Object.values`

and `reduce`

:

```
// reduce loops over array of salaries,
// adding them up
// and returns the result
function sumSalaries(salaries) {
return Object.values(salaries).reduce((a, b) => a + b, 0) // 650
}
```