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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 ---- -<div>{{JSRef}}</div> - -<p><code><strong>Object.prototype</strong></code> 代表 {{jsxref("Object")}} 的原型物件。</p> - -<div>{{js_property_attributes(0, 0, 0)}}</div> - -<h2 id="描述">描述</h2> - -<p>All objects in JavaScript are descended from {{jsxref("Object")}}; all objects inherit methods and properties from <code>Object.prototype</code>, although they may be overridden (except an <code>Object</code> with a <code>null</code> prototype, i.e. <code>Object.create(null)</code>). For example, other constructors' prototypes override the <code>constructor</code> property and provide their own {{jsxref("Object.prototype.toString()", "toString()")}} methods. Changes to the <code>Object</code> prototype object are propagated to all objects unless the properties and methods subject to those changes are overridden further along the prototype chain.</p> - -<h2 id="屬性">屬性</h2> - -<dl> - <dt>{{jsxref("Object.prototype.constructor")}}</dt> - <dd>Specifies the function that creates an object's prototype.</dd> - <dt>{{jsxref("Object.prototype.__proto__")}} {{non-standard_inline}}</dt> - <dd>Points to the object which was used as prototype when the object was instantiated.</dd> - <dt>{{jsxref("Object.prototype.__noSuchMethod__")}} {{non-standard_inline}}</dt> - <dd>Allows a function to be defined that will be executed when an undefined object member is called as a method.</dd> - <dt><s class="obsoleteElement">{{jsxref("Object.prototype.__count__")}} {{obsolete_inline}}</s></dt> - <dd><s class="obsoleteElement">Used to return the number of enumerable properties directly on a user-defined object, but has been removed.</s></dd> - <dt><s class="obsoleteElement">{{jsxref("Object.prototype.__parent__")}} {{obsolete_inline}}</s></dt> - <dd><s class="obsoleteElement">Used to point to an object's context, but has been removed.</s></dd> -</dl> - -<h2 id="方法">方法</h2> - -<dl> - <dt>{{jsxref("Object.prototype.__defineGetter__()")}} {{non-standard_inline}} {{deprecated_inline}}</dt> - <dd>Associates a function with a property that, when accessed, executes that function and returns its return value.</dd> - <dt>{{jsxref("Object.prototype.__defineSetter__()")}} {{non-standard_inline}} {{deprecated_inline}}</dt> - <dd>Associates a function with a property that, when set, executes that function which modifies the property.</dd> - <dt>{{jsxref("Object.prototype.__lookupGetter__()")}} {{non-standard_inline}} {{deprecated_inline}}</dt> - <dd>Returns the function associated with the specified property by the {{jsxref("Object.defineGetter", "__defineGetter__")}} method.</dd> - <dt>{{jsxref("Object.prototype.__lookupSetter__()")}} {{non-standard_inline}} {{deprecated_inline}}</dt> - <dd>Returns the function associated with the specified property by the {{jsxref("Object.defineSetter", "__defineSetter__")}} method.</dd> - <dt>{{jsxref("Object.prototype.hasOwnProperty()")}}</dt> - <dd>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.</dd> - <dt>{{jsxref("Object.prototype.isPrototypeOf()")}}</dt> - <dd>Returns a boolean indication whether the specified object is in the prototype chain of the object this method is called upon.</dd> - <dt>{{jsxref("Object.prototype.propertyIsEnumerable()")}}</dt> - <dd>Returns a boolean indicating if the internal <a href="/en-US/docs/ECMAScript_DontEnum_attribute" title="ECMAScript_DontEnum_attribute">ECMAScript DontEnum attribute</a> is set.</dd> - <dt>{{jsxref("Object.prototype.toSource()")}} {{non-standard_inline}}</dt> - <dd>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.</dd> - <dt>{{jsxref("Object.prototype.toLocaleString()")}}</dt> - <dd>Calls {{jsxref("Object.toString", "toString()")}}.</dd> - <dt>{{jsxref("Object.prototype.toString()")}}</dt> - <dd>Returns a string representation of the object.</dd> - <dt>{{jsxref("Object.prototype.unwatch()")}} {{non-standard_inline}}</dt> - <dd>Removes a watchpoint from a property of the object.</dd> - <dt>{{jsxref("Object.prototype.valueOf()")}}</dt> - <dd>Returns the primitive value of the specified object.</dd> - <dt>{{jsxref("Object.prototype.watch()")}} {{non-standard_inline}}</dt> - <dd>Adds a watchpoint to a property of the object.</dd> - <dt><s class="obsoleteElement">{{jsxref("Object.prototype.eval()")}} {{obsolete_inline}}</s></dt> - <dd><s class="obsoleteElement">Used to evaluate a string of JavaScript code in the context of the specified object, but has been removed.</s></dd> -</dl> - -<h2 id="範例">範例</h2> - -<p>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：</p> - -<pre class="brush: js">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(); -</pre> - -<h2 id="規範">規範</h2> - -<table class="standard-table"> - <tbody> - <tr> - <th scope="col">Specification</th> - <th scope="col">Status</th> - <th scope="col">Comment</th> - </tr> - <tr> - <td>{{SpecName('ES1')}}</td> - <td>{{Spec2('ES1')}}</td> - <td>Initial definition. Implemented in JavaScript 1.0.</td> - </tr> - <tr> - <td>{{SpecName('ES5.1', '#sec-15.2.3.1', 'Object.prototype')}}</td> - <td>{{Spec2('ES5.1')}}</td> - <td> </td> - </tr> - <tr> - <td>{{SpecName('ES6', '#sec-object.prototype', 'Object.prototype')}}</td> - <td>{{Spec2('ES6')}}</td> - <td> </td> - </tr> - </tbody> -</table> - -<h2 id="瀏覽器相容性">瀏覽器相容性</h2> - -<div>{{CompatibilityTable}}</div> - -<div id="compat-desktop"> -<table class="compat-table"> - <tbody> - <tr> - <th>Feature</th> - <th>Chrome</th> - <th>Firefox (Gecko)</th> - <th>Internet Explorer</th> - <th>Opera</th> - <th>Safari</th> - </tr> - <tr> - <td>Basic support</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - </tr> - </tbody> -</table> -</div> - -<div id="compat-mobile"> -<table class="compat-table"> - <tbody> - <tr> - <th>Feature</th> - <th>Android</th> - <th>Chrome for Android</th> - <th>Firefox Mobile (Gecko)</th> - <th>IE Mobile</th> - <th>Opera Mobile</th> - <th>Safari Mobile</th> - </tr> - <tr> - <td>Basic support</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - <td>{{CompatVersionUnknown}}</td> - </tr> - </tbody> -</table> -</div> - -<h2 id="參見">參見</h2> - -<ul> - <li><a href="/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript">Introduction to Object-Oriented JavaScript</a></li> -</ul> |