How to Sort JavaScript Objects by Key

If you have a JavaScript object, you may want to reorganize its properties alphabetically for improved readability or processing purposes. This can be achieved by utilizing the following steps:

<ul>
<li>Extract the object's keys into an array using <pre>Object.keys(...)</pre>.</li>

<li>Sort the array of keys alphabetically using <pre>.sort()</pre>.</li>

<li>Create a new object to hold the sorted properties. Iterate through the sorted keys array and add each key along with its corresponding value from the original object to the new object using a reducer function.</li>
</ul>

The following code demonstrates the process:

const unordered = {
  'b': 'foo',
  'c': 'bar',
  'a': 'baz'
};

console.log(JSON.stringify(unordered));
// → '{"b":"foo","c":"bar","a":"baz"}'

const ordered = Object.keys(unordered).sort().reduce(
  (obj, key) => {
    obj[key] = unordered[key];
    return obj;
  },
  {}
);

console.log(JSON.stringify(ordered));
// → '{"a":"baz","b":"foo","c":"bar"}'

After executing these steps, your object will be sorted by its keys alphabetically.