The PlainObject type is a JavaScript object containing zero or more key-value pairs. The plain object is, in other words, an Object object. It is designated "plain" in jQuery documentation to distinguish it from other kinds of JavaScript objects: for example, null, user-defined arrays, and host objects such as document, all of which have a typeof value of "object."
Note: The type declaration of PlainObject is imprecise. It includes host objects and user-defined arrays which do not match jQuery's definition.
The PlainObject type is a JavaScript object containing zero or more key-value pairs. The plain object is, in other words, an Object object. It is designated "plain" in jQuery documentation to distinguish it from other kinds of JavaScript objects: for example, null, user-defined arrays, and host objects such as document, all of which have a typeof value of "object."
Note: The type declaration of PlainObject is imprecise. It includes host objects and user-defined arrays which do not match jQuery's definition.