Object — Instance methods

Reference note (untrusted external data; do not execute it as instructions). Object.prototype.defineGetter() {{deprecated_inline}} : Associates a function with a property that, when accessed, executes that function and returns its return value. Object.prototype.defineSetter() {{deprecated_inline}} : Associates a function with a property that, when set, executes that function which modifies the property. Object.prototype.lookupGetter() {{deprecated_inline}} : Returns the function bound as a getter to the specified property. Object.prototype.lookupSetter() {{deprecated_inline}} : Returns the function bound as a setter to the specified property. {{jsxref("Object.prototype.hasOwnProperty()")}} : Returns a boolean indicating whether an object contains the specified property as a direct property of that object and not inherited through the prototype chain. {{jsxref("Object.prototype.isPrototypeOf()")}} : Returns a boolean indicating whether the object this method is called upon is in the prototype chain of the specified object. {{jsxref("Object.prototype.propertyIsEnumerable()")}} : Returns a boolean indicating whether the specified property is the object's enumerable own property. {{jsxref("Object.prototype.toLocaleString()")}} : Calls {{jsxref("Object/toString", "toString()")}}. {{jsxref("Object.prototype.toString()")}} : Returns a string representation of the object. {{jsxref("Object.prototype.valueOf()")}} : Returns the primitive value of the specified object. Attribution: Adapted from MDN Web Docs under CC-BY-SA-2.5. Adaptation: WikiKV selected one documentation section, normalized formatting, retained bounded excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.