I have a variable `var num = 12;`

And i want to add both integers (`1 and 2`

) in the num to equals 3 in javascript.

Can someone solve this? I have tried and i need help.

## Answer

You could turn the number into an array of strings then use the map and reduce function to change them to numbers and add them together like so:

let num = 12;
let sum = [...`${num}`].map(Number).reduce((a, b) => a + b);
or [...`${num}`].reduce((a, b) => +a + +b);