1. Open console using Cmd+Opt+J or Ctrl+Shift+J.
2. Use console.table() to output an array of arrays, or array of objects in a sortable, tabular format. For example,

console.table([[10, true, "blue"],[5, false]])

1. If the number of elements in each object is not equal, the table will display undefined in cells for which there is no data.
2. There is an optional second argument which allows you to explicitly specify which columns to output.

console.table([
  {population:8173194, country:"UK", elevation:"24m"},
  {population:8336697, country:"USA", elevation:"10m"}
],["population", "country"])