JSFiddle - React, Tailwind, and code Playground

by Ryan McQuen

JavaScript

var arr = [1, 3, 2];

console.log(
  // This one works:
  arr
  .map(function (i) {
    return i + i;
  })
  // Chaining!
  .sort()
);
// => [ 2, 4, 6 ]

console.log(
  // This one does not:
  arr
  .forEach(function (i) {
    return i + i;
  })
  // This is where forEach breaks:
  .sort()
);
// => TypeError: Cannot read property 'sort' of undefined