initial commit

1 files changed, 77 insertions, 0 deletions

diff --git a/files/zh-cn/web/javascript/reference/global_objects/set/add/index.html b/files/zh-cn/web/javascript/reference/global_objects/set/add/index.html
new file mode 100644
index 0000000000..255379d70c
--- /dev/null
+++ b/files/zh-cn/web/javascript/reference/global_objects/set/add/index.html
@@ -0,0 +1,77 @@
+---
+title: Set.prototype.add()
+slug: Web/JavaScript/Reference/Global_Objects/Set/add
+tags:
+  - ECMAScript6
+  - JavaScript
+  - Prototype
+  - set
+  - 原型
+  - 方法
+translation_of: Web/JavaScript/Reference/Global_Objects/Set/add
+---
+<div>{{JSRef}} </div>
+
+<p><code><strong>add()</strong></code> 方法用来向一个 <code>Set</code> 对象的末尾添加一个指定的值。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/set-prototype-add.html")}}</div>
+
+
+
+<h2 id="Syntax" name="Syntax">语法</h2>
+
+<pre class="syntaxbox notranslate"><code><em>mySet</em>.add(value);</code></pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt>value</dt>
+ <dd>必需。需要添加到 <code>Set </code>对象的元素的值。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p><code>Set</code> 对象本身</p>
+
+<p>注意：不能添加重复的值</p>
+
+<h2 id="Examples" name="Examples">示例</h2>
+
+<pre class="brush: js notranslate">var mySet = new Set();
+
+mySet.add(1);
+mySet.add(5).add("some text"); // 可以链式调用
+
+console.log(mySet);
+// Set [1, 5, "some text"]
+
+mySet.add(5).add(1);
+console.log(mySet);
+// Set [1, 5, "some text"]  // 重复的值没有被添加进去</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">规范</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-set.prototype.add', 'Set.prototype.add')}}</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Set.add")}}</p>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>{{jsxref("Set")}}</li>
+ <li>{{jsxref("Set.prototype.delete()")}}</li>
+ <li>{{jsxref("Set.prototype.has()")}}</li>
+</ul>