is-plain-object

What is is-plain-object?

The is-plain-object package is a simple utility that checks if an object is a plain object, that is, an object created by the Object constructor or one with a null prototype.

What are is-plain-object's main functionalities?

Check if an object is a plain object

This feature allows you to verify if a given object is a plain object. It returns true for objects created by the Object constructor or with a null prototype and false for objects created by other constructors.

const isPlainObject = require('is-plain-object');

const obj = { x: 1, y: 2 };
console.log(isPlainObject(obj)); // true

const notPlain = Object.create(null);
console.log(isPlainObject(notPlain)); // true

function Test() { this.a = 1; }
console.log(isPlainObject(new Test())); // false

Other packages similar to is-plain-object

lodash.isplainobject

This package is a part of the Lodash library specifically for checking if a value is a plain object. It is similar to is-plain-object but comes from a well-known utility library, which might be preferable for projects already using Lodash.

isobject

Isobject checks if a value is an object and not null, but it does not check if the object is plain. It is less strict compared to is-plain-object, which specifically checks for plain objects.

README

is-plain-object

Returns true if an object was created by the Object constructor.

Use isobject if you only want to check if the value is an object and not an array or null.

Install with npm

npm i is-plain-object --save

Running tests

Install dev dependencies.

npm i -d && npm test

Usage

var isPlainObject = require('is-plain-object');

true when created by the Object constructor.

isPlainObject(Object.create({}));
//=> true
isPlainObject(Object.create(Object.prototype));
//=> true
isPlainObject({foo: 'bar'});
//=> true
isPlainObject({});
//=> true

false when not created by the Object constructor.

isPlainObject(1);
//=> false
isPlainObject(['foo', 'bar']);
//=> false
isPlainObject([]);
//=> false
isPlainObject(new Foo);
//=> false
isPlainObject(null);
//=> false
isPlainObject(Object.create(null));
//=> false

Author

Jon Schlinkert

• github/jonschlinkert
• twitter/jonschlinkert

License

Copyright (c) 2015 Jon Schlinkert
Released under the MIT license

---

This file was generated by verb on February 25, 2015.