9 lines
186 B
Markdown
9 lines
186 B
Markdown
### Sum of array of numbers
|
|
|
|
Use `reduce()` to add each value to an accumulator, initialized with a value of `0`.
|
|
|
|
```js
|
|
var sum = arr =>
|
|
arr.reduce( (acc , val) => acc + val, 0);
|
|
```
|