---
title: URLSearchParams.set()
slug: Web/API/URLSearchParams/set
translation_of: Web/API/URLSearchParams/set
---
<p>{{ApiRef("URL API")}}{{SeeCompatTable}} </p>

<p>{{domxref("URLSearchParams")}}接口的set()方法用于设置和搜索参数相关联的值。如果设置前已经存在匹配的值，该方法会删除多余的，如果将要设置的值不存在，则创建它</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">URLSearchParams.set(name, value)</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt>键名</dt>
 <dd>将要设置的参数的健值名。</dd>
 <dt>参数值</dt>
 <dd>所要设置的参数值。</dd>
</dl>

<h3 id="返回值">返回值</h3>

<p>Void</p>

<h2 id="例子">例子</h2>

<pre class="brush: js">let url = new URL('https://example.com?foo=1&amp;bar=2');
let params = new URLSearchParams(url.search.slice(1));

//Add a third parameter.
params.set('baz', 3);
</pre>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName('URL', '#dom-urlsearchparams-set', "set()")}}</td>
   <td>{{Spec2('URL')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<div>{{CompatibilityTable}}</div>

<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 (WebKit)</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatChrome(49.0)}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Android Webview</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
   <th>Chrome for Android</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatChrome(49.0)}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatChrome(49.0)}}</td>
  </tr>
 </tbody>
</table>
</div>