files/zh-cn/web/api/urlsearchparams/tostring/index.html


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

<p>{{domxref("URLSearchParams")}} 接口的toString()方法 返回适用在URL中的查询字符串。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">URLSearchParams.toString()</pre>

<h3 id="返回值">返回值</h3>

<p>字符串</p>

<h2 id="实例">实例</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 second foo parameter.
params.append('foo', 4);
console.log(params.toString());
//Prints 'foo=1&amp;bar=2&amp;foo=4'.</pre>

<h2 id="规范">规范</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', '#urlsearchparams-stringification-behavior', "toString()")}}</td>
   <td>{{Spec2('URL')}}</td>
   <td>Initial definition. Appears in the IDL as <code>stringifier</code>.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容">浏览器兼容</h2>

{{Compat("api.URLSearchParams.toString")}}

<h2 id="参考">参考</h2>

<ul>
 <li>Other URL-related interfaces: {{domxref("URL")}}, {{domxref("URLUtils")}}.</li>
 <li><a href="https://developers.google.com/web/updates/2016/01/urlsearchparams?hl=en">Google Developers: Easy URL manipulation with URLSearchParams</a></li>
</ul>