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authorFlorian Merz <me@fiji-flo.de>2021-02-11 13:12:08 +0100
committerFlorian Merz <me@fiji-flo.de>2021-02-11 13:12:08 +0100
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+---
+title: Promise.prototype
+slug: Web/JavaScript/Reference/Global_Objects/Promise/prototype
+translation_of: Web/JavaScript/Reference/Global_Objects/Promise
+translation_of_original: Web/JavaScript/Reference/Global_Objects/Promise/prototype
+---
+<div>{{JSRef}}</div>
+
+<p><code><strong>Promise</strong></code><strong><code>.prototype</code></strong> 屬性代表了 {{jsxref("Promise")}} 建構式的原型物件。</p>
+
+<div>{{js_property_attributes(0,0,0)}}</div>
+
+<h2 id="描述">描述</h2>
+
+<p>所有 {{jsxref("Promise")}} 實例都繼承自 {{jsxref("Promise.prototype")}}。您可以使用建構式的原型物件來增加屬性或方法到所有的 <code>Promise</code> 實例。</p>
+
+<h2 id="屬性">屬性</h2>
+
+<dl>
+ <dt><code>Promise.prototype.constructor</code></dt>
+ <dd>回傳一個建立實例原型(instance's prototype)的函式。預設為 {{jsxref("Promise")}} 函數。</dd>
+</dl>
+
+<h2 id="方法">方法</h2>
+
+<dl>
+ <dt>{{jsxref("Promise.catch", "Promise.prototype.catch(onRejected)")}}</dt>
+ <dd>繫結一個拒絕回呼函式(rejection handler callback)到 promise,當它被呼叫時回傳一個以回傳值作解析的新 promise,或者當 promise 被實現時以原值作解析。</dd>
+ <dt>{{jsxref("Promise.then", "Promise.prototype.then(onFulfilled, onRejected)")}}</dt>
+ <dd>繫結實現或拒絕回呼函式到 promise,回傳一個以 handler 之回傳值作解析的新 promise,或者當 promise 未處理(not handled)時以原值作解析。(i.e. 比如相關聯的 <code>onFulfilled</code> 或 <code>onRejected</code> 不是函式。)</dd>
+</dl>
+
+<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('ES6', '#sec-promise.prototype', 'Promise.prototype')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td>Initial definition.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-promise.prototype', 'Promise.prototype')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器相容性">瀏覽器相容性</h2>
+
+<p class="hidden">To contribute to this compatibility data, please write a pull request against this file: <a href="https://github.com/mdn/browser-compat-data/blob/master/javascript/promise.json">https://github.com/mdn/browser-compat-data/blob/master/javascript/promise.json</a>.</p>
+
+<p>{{Compat("javascript/promise","Promise.prototype")}}</p>
+
+<h2 id="參見">參見</h2>
+
+<ul>
+ <li>{{jsxref("Promise")}}</li>
+</ul>