How Can I Get an Object's Keys as an Array in JavaScript?

Accessing Object Keys as an Array

In JavaScript, retrieving an object's keys as an array can be a common task. While the traditional for-in loop provides a straightforward solution, it can be verbose. This article presents more concise methods for achieving this goal using jQuery or pure JavaScript.

jQuery's .keys() Method

For jQuery users, the .keys() method offers a convenient way to extract keys from an object:

var foo = {
  'alpha': 'puffin',
  'beta': 'beagle'
};

var keys = $.keys(foo);

Object.keys() for Pure JavaScript

For those working with pure JavaScript, the Object.keys() method provides an elegant solution:

var foo = {
  'alpha': 'puffin',
  'beta': 'beagle'
};

var keys = Object.keys(foo);
console.log(keys); // ['alpha', 'beta']

Both the jQuery .keys() method and the Object.keys() method return an array of the object's keys, providing a concise and efficient way to work with object keys in JavaScript.

The above is the detailed content of How Can I Get an Object's Keys as an Array in JavaScript?. For more information, please follow other related articles on the PHP Chinese website!