Callbacks 1 and 2 complete

[bryanszendel]

No description provided.

[seanwu20-zz]

Nice job on MVP! A lot of array methods like map and filter already create a new array, so there's no need to make a separate array.

let allCaps = [];
allCaps = runners.map(item => item['first_name'].toUpperCase());

This can be simplified to
let allCaps = runners.map(item => item['first_name'].toUpperCase());

Score: 2