Discussion on: Some awesome js tricks you should know about

don't forget the invaluable array.map() method. Basically an abbreviation of array.forEach(), but executes a callback on each array element and returns an array with the mutated values.

const nums = [1, 15, 30];
const numsPlusTen = nums.map((num) => num + 10);
console.log(numsPlusTen); // Returns [11, 25, 40]