# jQuery.isPlainObject()

Categories: Utilities

## jQuery.isPlainObject( object ) Returns: Boolean

Description: Check to see if an object is a plain object (created using "{}" or "new Object").

- #### version added: 1.4jQuery.isPlainObject( object )

  objectThe object that will be checked to see if it's a plain object.

Note: Host objects (or objects used by browser host environments to complete the execution environment of ECMAScript) have a number of inconsistencies which are difficult to robustly feature detect cross-platform. As a result of this, `$.isPlainObject()` may evaluate inconsistently across browsers in certain instances.

An example of this is a test against `document.location` using `$.isPlainObject()` as follows:

    console.log($.isPlainObject(document.location));

which throws an invalid pointer exception in IE8. With this in mind, it's important to be aware of any of the gotchas involved in using `$.isPlainObject()` against older browsers. Some basic example of use-cases that do function correctly cross-browser can be found below.

### Example:

#### Check an object to see if it's a plain object.

    jQuery.isPlainObject({}) // true
    jQuery.isPlainObject("test") // false