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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:43:23 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:43:23 -0500 |
commit | 218934fa2ed1c702a6d3923d2aa2cc6b43c48684 (patch) | |
tree | a9ef8ac1e1b8fe4207b6d64d3841bfb8990b6fd0 /files/zh-tw/web/javascript/reference/global_objects/set/entries/index.html | |
parent | 074785cea106179cb3305637055ab0a009ca74f2 (diff) | |
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diff --git a/files/zh-tw/web/javascript/reference/global_objects/set/entries/index.html b/files/zh-tw/web/javascript/reference/global_objects/set/entries/index.html new file mode 100644 index 0000000000..6bf609afb2 --- /dev/null +++ b/files/zh-tw/web/javascript/reference/global_objects/set/entries/index.html @@ -0,0 +1,78 @@ +--- +title: Set.prototype.entries() +slug: Web/JavaScript/Reference/Global_Objects/Set/entries +tags: + - ECMAScript 2015 + - JavaScript + - 原型 + - 方法 + - 迭代器 + - 集合 +translation_of: Web/JavaScript/Reference/Global_Objects/Set/entries +--- +<div>{{JSRef}}</div> + +<div><code><strong>entries()</strong></code> 方法回傳一個 <code>Iterator</code> 物件,其包含著一個由插入順序排序,<code>Set</code> 物件中每個元素的<strong> <code>[value, value]</code></strong> 陣列。儘管對 <code>Set</code> 物件來說沒有像 <code>Map</code> 一樣的 <code>key</code> 概念,為了確保這個 API 運作的與 <code>Map</code> 相似,每個 <em>entry</em> 都有同樣的值同時作為其 <em>key</em> 和 <em>value</em> ,因此回傳的是一個<strong><code>[value, value]</code></strong> 的陣列。</div> + +<div>{{EmbedInteractiveExample("pages/js/set-prototype-entries.html")}}</div> + + + +<h2 id="語法">語法</h2> + +<pre class="syntaxbox"><code><em>mySet</em>.entries()</code></pre> + +<h3 id="回傳值">回傳值</h3> + +<p>一個新的 <code>Iterator</code> 物件,包含著一個由插入順序排序,<code>Set</code> 物件中每個元素的<strong> <code>[value, value]</code></strong> 陣列。</p> + +<h2 id="範例">範例</h2> + +<h3 id="使用_entries()">使用 <code>entries()</code></h3> + +<pre class="brush:js">var mySet = new Set(); +mySet.add('foobar'); +mySet.add(1); +mySet.add('baz'); + +var setIter = mySet.entries(); + +console.log(setIter.next().value); // ["foobar", "foobar"] +console.log(setIter.next().value); // [1, 1] +console.log(setIter.next().value); // ["baz", "baz"] +</pre> + +<h2 id="規範">規範</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">規範</th> + <th scope="col">狀態</th> + <th scope="col">註</th> + </tr> + <tr> + <td>{{SpecName('ES2015', '#sec-set.prototype.entries', 'Set.prototype.entries')}}</td> + <td>{{Spec2('ES2015')}}</td> + <td>Initial definition.</td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-set.prototype.entries', 'Set.prototype.entries')}}</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>{{Compat("javascript.builtins.Set.entries")}}</p> + +<h2 id="另見">另見</h2> + +<ul> + <li>{{jsxref("Set.prototype.keys()")}}</li> + <li>{{jsxref("Set.prototype.values()")}}</li> +</ul> |