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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
| commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
| tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/javascript/reference/global_objects/set/entries | |
| parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
| download | translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2 translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip | |
initial commit
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/set/entries')
| -rw-r--r-- | files/zh-cn/web/javascript/reference/global_objects/set/entries/index.html | 113 |
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diff --git a/files/zh-cn/web/javascript/reference/global_objects/set/entries/index.html b/files/zh-cn/web/javascript/reference/global_objects/set/entries/index.html new file mode 100644 index 0000000000..f73a1e1a26 --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/set/entries/index.html @@ -0,0 +1,113 @@ +--- +title: Set.prototype.entries() +slug: Web/JavaScript/Reference/Global_Objects/Set/entries +translation_of: Web/JavaScript/Reference/Global_Objects/Set/entries +--- +<div>{{JSRef}}</div> + +<p>entries() 方法返回一个新的迭代器对象 ,这个对象的元素是类似 [value, value] 形式的数组,value 是集合对象中的每个元素,迭代器对象元素的顺序即集合对象中元素插入的顺序。由于集合对象不像 Map 对象那样拥有 key,然而,为了与 Map 对象的 API 形式保持一致,故使得每一个 entry 的 key 和 value 都拥有相同的值,因而最终返回一个 [value, value] 形式的数组。</p> + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox"><code><em>mySet</em>.entries()</code></pre> + +<h3 id="返回值">返回值</h3> + +<p>一个新的包含 [value, value] 形式的数组迭代器对象,value 是给定集合中的每个元素,迭代器 对象元素的顺序即集合对象中元素插入的顺序。</p> + +<h2 id="示例">示例</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="规范">规范</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">规范</th> + <th scope="col">状态</th> + <th scope="col">说明</th> + </tr> + <tr> + <td>{{SpecName('ES6', '#sec-set.prototype.entries', 'Set.prototype.entries')}}</td> + <td>{{Spec2('ES6')}}</td> + <td>初始定义。</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="浏览器兼容性">浏览器兼容性 </h2> + +<p>{{CompatibilityTable}}</p> + +<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>38</td> + <td>{{ CompatGeckoDesktop("24") }}</td> + <td>{{CompatNo}}</td> + <td>25</td> + <td>7.1</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>{{CompatNo}}</td> + <td>38</td> + <td>{{ CompatGeckoMobile("24") }}</td> + <td>{{CompatNo}}</td> + <td>{{CompatNo}}</td> + <td>8</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="相关链接">相关链接</h2> + +<ul> + <li>{{jsxref("Set.prototype.keys()")}}</li> + <li>{{jsxref("Set.prototype.values()")}}</li> +</ul> |
