propertyIsEnumerable(propertyName) - Indicates if the given property can be enumerated using the for-in statement.isPrototypeOf(object) - Determines if the object is a prototype of another object.The property name must be specified as a string (for example, o.hasOwnProperty('name')).

hasOwnProperty(propertyName) - tells if a property exists on the object instance (not on the prototype).constructor - The function used to create the object.The Object type in Javascript is the base for all other objects.Īll of the properties and methods of the Object type are alsoĮach Object instance has the following properties and methods: You can create your own objects by creating instances of the Object type and adding properties and Objects are created by using the new operator. Objects in Javascript groups data and functions. See the terminology that Microsoft uses to describe software updates.Create Object type variable in Javascript Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the 'Applies to' section. Work around: 'return (typeof x = … || false)' Status 'return (typeof x = …)' // does not work fine. Work around: 'y = (typeof x = … || false)' 'y = (typeof x = …)' // does not work fine. The working status is listed as follows: 'if (typeof x = …)' // works fine This issue occurs because of a timing issue with Internet Explorer when it requests the embedded resources. Note This update was first included in March cumulative security update for Internet Explorer (MS15-018).

Additionally, see the technical information about the most recent cumulative security update for Internet Explorer. To resolve this problem, install the most recent cumulative security update for Internet Explorer. After the just-in-time (JIT) compilation of certain JavaScript functions, Internet Explorer 11 may return an incorrect JavaScript typeof result for host and DOM objects in non-edge document modes.

Js typeof object