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+---
+title: URLSearchParams.get()
+slug: Web/API/URLSearchParams/get
+translation_of: Web/API/URLSearchParams/get
+---
+<p>{{ApiRef("URL API")}}{{SeeCompatTable}} </p>
+
+<p>{{domxref("URLSearchParams")}} 接口的<strong>get()</strong>方法返回第一个与搜索参数对应的值<strong>。</strong></p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">URLSearchParams.get(name)</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt>键名</dt>
+ <dd>将要返回的参数的键名。</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<p>返回一个 {{domxref("USVString")}} ；如果没找到，返回 <code><strong>null</strong></code>.</p>
+
+<h2 id="示例">示例</h2>
+
+<p>如果一个页面的URL是 <code>https://example.com/?name=Jonathan&amp;age=18</code> ，你可以这样解析参数“name”和“age”:</p>
+
+<pre class="default prettyprint prettyprinted"><code>let params = new URLSearchParams(document.location.search.substring(1));
+let name = params.get("name")<span class="kwd">; // is the string "Jonathan"
+</span>let age = parseInt(params.get("age"), 10<span class="kwd">); // is the number 18</span></code>
+</pre>
+
+<p>查找一个不存在的键名则返回 <code><strong>null</strong></code>:</p>
+
+<pre><code>let address = params.get("address"); // null</code></pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">说明</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('URL', '#dom-urlsearchparams-get', "get()")}}</td>
+   <td>{{Spec2('URL')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>
+
+
+<p>{{Compat("api.URLSearchParams.get")}}</p>
+</div>