This example demonstrates sorting an array of JavaScript objects using the D3.js library. The code defines an array, `thing`, containing two objects with `key` and `value` properties, then sorts it using the `descending` function from `d3` within the `Array.sort()` method. The sorted array is logged to the console, showcasing how D3's comparison helpers can be used to order data. The visualization simply relies on a console output to display the result.