JSFiddle - React, Tailwind, and code Playground

by Jessie Lau

JavaScript

function unless(test, then) {
    if (!test) then();
}
function repeat(times, body) {
    for (var i = 0; i < times; i++) body(i);
}

repeat(30, function(n) {
  unless(n % 2, function() {
    console.log(n, "is even");
  });
});