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JavaScript and XPages reference
This reference describes the JavaScript™ language elements, Application Programming Interfaces (APIs), and other artifacts that you need to create scripts, plus the XPages simple actions.
Standard (JavaScript)
The Standard library contains classes for manipulating data of different types and performing common operations.
RegExp (Standard - JavaScript)
hasOwnProperty (RegExp - JavaScript)
Checks whether a string has a specified property.

JavaScript and XPages reference
This reference describes the JavaScript™ language elements, Application Programming Interfaces (APIs), and other artifacts that you need to create scripts, plus the XPages simple actions.
- JavaScript™ language elements (JavaScript)
  The JavaScript™ language elements are based on the ECMAScript Language Specification Standard ECMA-262 (see http://www.ecma-international.org/publications/standards/Ecma-262.htm). The JavaScript described here applies to the server-side interpreter. Client-side scripts are interpreted by the browser.
- Simple actions (JavaScript)
  A simple action performs a pre-programmed activity that can be modified by arguments.
- Global objects and functions (JavaScript™)
  Global objects provide entry points to server-side scripts. Entering the name of a global object instantiates it.
- DOM (JavaScript)
  Represents a document in XML Document Object Model format.
- Domino®
  This library provides access to the IBM® Domino® back-end.
- Runtime (JavaScript)
  The Runtime library contains classes that provide useful methods for globalization.
- Standard (JavaScript)
  The Standard library contains classes for manipulating data of different types and performing common operations.
  - Array (Standard - JavaScript)
    Represents an array.
  - Boolean (Standard - JavaScript)
    Represents a boolean value.
  - Date (Standard - JavaScript)
    Represents a date and time.
  - Math (JavaScript)
    Represents common mathematical values and functions.
  - Number (Standard - JavaScript)
    Represents a numeric value.
  - Object (JavaScript)
    Provides common methods for all classes.
  - RegExp (Standard - JavaScript)
    - RegExp (RegExp - JavaScript)
      Creates a new RegExp object.
    - compile (JavaScript)
      Recreates a RegExp object.
    - equals (RegExp - JavaScript)
      Checks whether this object equals another.
    - exec (JavaScript)
      Executes a search using a regular expression.
    - hasOwnProperty (RegExp - JavaScript)
      Checks whether a string has a specified property.
    - match (RegExp - JavaScript)
      Gets substrings that match a regular expression.
    - prototype (RegExp - JavaScript)
    - replace (RegExp - JavaScript)
      Replaces a substring.
    - search (RegExp - JavaScript)
      Gets the index of the first occurrence of a substring.
    - split (RegExp - JavaScript)
      Splits a string between string separators.
    - test (JavaScript)
      Tests a string for a match of a regular expression.
    - toLocaleString (RegExp - JavaScript)
      Gets a string representation of a regular expression taking into account the host locale.
    - toString (RegExp - JavaScript)
      Gets the string representation of a regular expression.
    - valueOf (RegExp - JavaScript)
      Gets a string representation of a regular expression.
  - String (Standard - JavaScript)
    Represents a string.
- XSP (JavaScript™)
  The XSP library contains classes that access the browser context.

hasOwnProperty (RegExp - JavaScript)

Checks whether a string has a specified property.

Defined in

Syntax

hasOwnProperty(property:string)
: boolean


Parameters	Description
`property`	The name of a property.


Return value	Description
`boolean`	True if the object has the property; otherwise false.

Examples

This example returns true or false for three properties.

var regexp = /(Moscow)/;
return "constructor = " + regexp.hasOwnProperty("constructor") +
	"\nlength = " + regexp.hasOwnProperty("length") +
	"\nprototype = " + regexp.hasOwnProperty("prototype")