From 43a5cac2eff22c21071800e13bef12af9d3a37d0 Mon Sep 17 00:00:00 2001 From: Florian Merz Date: Thu, 11 Feb 2021 13:12:08 +0100 Subject: unslug zh-tw: move --- .../global_objects/object/prototype/index.html | 219 --------------------- 1 file changed, 219 deletions(-) delete mode 100644 files/zh-tw/web/javascript/reference/global_objects/object/prototype/index.html (limited to 'files/zh-tw/web/javascript/reference/global_objects/object') diff --git a/files/zh-tw/web/javascript/reference/global_objects/object/prototype/index.html b/files/zh-tw/web/javascript/reference/global_objects/object/prototype/index.html deleted file mode 100644 index 4365b10c61..0000000000 --- a/files/zh-tw/web/javascript/reference/global_objects/object/prototype/index.html +++ /dev/null @@ -1,219 +0,0 @@ ---- -title: Object.prototype -slug: Web/JavaScript/Reference/Global_Objects/Object/prototype -tags: - - JavaScript - - Object - - 待翻譯 -translation_of: Web/JavaScript/Reference/Global_Objects/Object -translation_of_original: Web/JavaScript/Reference/Global_Objects/Object/prototype ---- -
{{JSRef}}
- -

Object.prototype 代表 {{jsxref("Object")}} 的原型物件。

- -
{{js_property_attributes(0, 0, 0)}}
- -

描述

- -

All objects in JavaScript are descended from {{jsxref("Object")}}; all objects inherit methods and properties from Object.prototype, although they may be overridden (except an Object with a null prototype, i.e. Object.create(null)). For example, other constructors' prototypes override the constructor property and provide their own {{jsxref("Object.prototype.toString()", "toString()")}} methods. Changes to the Object prototype object are propagated to all objects unless the properties and methods subject to those changes are overridden further along the prototype chain.

- -

屬性

- -
-
{{jsxref("Object.prototype.constructor")}}
-
Specifies the function that creates an object's prototype.
-
{{jsxref("Object.prototype.__proto__")}} {{non-standard_inline}}
-
Points to the object which was used as prototype when the object was instantiated.
-
{{jsxref("Object.prototype.__noSuchMethod__")}} {{non-standard_inline}}
-
Allows a function to be defined that will be executed when an undefined object member is called as a method.
-
{{jsxref("Object.prototype.__count__")}} {{obsolete_inline}}
-
Used to return the number of enumerable properties directly on a user-defined object, but has been removed.
-
{{jsxref("Object.prototype.__parent__")}} {{obsolete_inline}}
-
Used to point to an object's context, but has been removed.
-
- -

方法

- -
-
{{jsxref("Object.prototype.__defineGetter__()")}} {{non-standard_inline}} {{deprecated_inline}}
-
Associates a function with a property that, when accessed, executes that function and returns its return value.
-
{{jsxref("Object.prototype.__defineSetter__()")}} {{non-standard_inline}} {{deprecated_inline}}
-
Associates a function with a property that, when set, executes that function which modifies the property.
-
{{jsxref("Object.prototype.__lookupGetter__()")}} {{non-standard_inline}} {{deprecated_inline}}
-
Returns the function associated with the specified property by the {{jsxref("Object.defineGetter", "__defineGetter__")}} method.
-
{{jsxref("Object.prototype.__lookupSetter__()")}} {{non-standard_inline}} {{deprecated_inline}}
-
Returns the function associated with the specified property by the {{jsxref("Object.defineSetter", "__defineSetter__")}} method.
-
{{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 indication whether the specified object is in the prototype chain of the object this method is called upon.
-
{{jsxref("Object.prototype.propertyIsEnumerable()")}}
-
Returns a boolean indicating if the internal ECMAScript DontEnum attribute is set.
-
{{jsxref("Object.prototype.toSource()")}} {{non-standard_inline}}
-
Returns string containing the source of an object literal representing the object that this method is called upon; you can use this value to create a new object.
-
{{jsxref("Object.prototype.toLocaleString()")}}
-
Calls {{jsxref("Object.toString", "toString()")}}.
-
{{jsxref("Object.prototype.toString()")}}
-
Returns a string representation of the object.
-
{{jsxref("Object.prototype.unwatch()")}} {{non-standard_inline}}
-
Removes a watchpoint from a property of the object.
-
{{jsxref("Object.prototype.valueOf()")}}
-
Returns the primitive value of the specified object.
-
{{jsxref("Object.prototype.watch()")}} {{non-standard_inline}}
-
Adds a watchpoint to a property of the object.
-
{{jsxref("Object.prototype.eval()")}} {{obsolete_inline}}
-
Used to evaluate a string of JavaScript code in the context of the specified object, but has been removed.
-
- -

範例

- -

因為 JavaScript 並沒有子類別的物件，所以原型是個很有用的解決辦法, 使某些函數作為物件的基本類別物件。例如：

- -
var Person = function() {
-  this.canTalk = true;
-};
-
-Person.prototype.greet = function() {
-  if (this.canTalk) {
-    console.log('Hi, I am ' + this.name);
-  }
-};
-
-var Employee = function(name, title) {
-  Person.call(this);
-  this.name = name;
-  this.title = title;
-};
-
-Employee.prototype = Object.create(Person.prototype);
-Employee.prototype.constructor = Employee;
-
-Employee.prototype.greet = function() {
-  if (this.canTalk) {
-    console.log('Hi, I am ' + this.name + ', the ' + this.title);
-  }
-};
-
-var Customer = function(name) {
-  Person.call(this);
-  this.name = name;
-};
-
-Customer.prototype = Object.create(Person.prototype);
-Customer.prototype.constructor = Customer;
-
-var Mime = function(name) {
-  Person.call(this);
-  this.name = name;
-  this.canTalk = false;
-};
-
-Mime.prototype = Object.create(Person.prototype);
-Mime.prototype.constructor = Mime;
-
-var bob = new Employee('Bob', 'Builder');
-var joe = new Customer('Joe');
-var rg = new Employee('Red Green', 'Handyman');
-var mike = new Customer('Mike');
-var mime = new Mime('Mime');
-
-bob.greet();
-// Hi, I am Bob, the Builder
-
-joe.greet();
-// Hi, I am Joe
-
-rg.greet();
-// Hi, I am Red Green, the Handyman
-
-mike.greet();
-// Hi, I am Mike
-
-mime.greet();
-
- -

規範

- - - - - - - - - - - - - - - - - - - - - - - - -
SpecificationStatusComment
{{SpecName('ES1')}}{{Spec2('ES1')}}Initial definition. Implemented in JavaScript 1.0.
{{SpecName('ES5.1', '#sec-15.2.3.1', 'Object.prototype')}}{{Spec2('ES5.1')}} 
{{SpecName('ES6', '#sec-object.prototype', 'Object.prototype')}}{{Spec2('ES6')}} 
- -

瀏覽器相容性

- -
{{CompatibilityTable}}
- -
- - - - - - - - - - - - - - - - - - - -
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
-
- -
- - - - - - - - - - - - - - - - - - - - - -
FeatureAndroidChrome for AndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
-
- -

參見

- - -- cgit v1.2.3-54-g00ecf