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---
title: XMLHttpRequest.responseText
slug: Web/API/XMLHttpRequest/responseText
tags:
- XMLHttpRequest.responseText
translation_of: Web/API/XMLHttpRequest/responseText
---
<div>{{draft}}</div>
<div>{{APIRef('XMLHttpRequest')}}</div>
<p><strong>XMLHttpRequest.responseText </strong>在一个请求被发送后，从服务器端返回文本。</p>
<h2 id="语法">语法</h2>
<pre>var resultText = XMLHttpRequest.responseText;</pre>
<h3 id="取值">取值</h3>
<p>{{domxref("DOMString")}} 是<code>XMLHttpRequest</code> 返回的纯文本的值。当{{domxref("DOMString")}} 为<code>null</code>时，表示请求失败了。当{{domxref("DOMString")}} 为""时，表示这个请求还没有被{{domxref("XMLHttpRequest.send", "send()")}}</p>
<p>当处理一个异步request的时候，尽管当前请求并没有结束，<code>responseText</code>的返回值是当前从后端收到的内容。</p>
<p>当请求状态{{domxref("XMLHttpRequest.readyState", "readyState")}}变为{{domxref("XMLHttpRequest.DONE", "XMLHttpRequest.DONE")}} (<code>4</code>)，且{{domxref("XMLHttpRequest.status", "status")}}值为200（<font face="consolas, Liberation Mono, courier, monospace"><span style="background-color: rgba(220, 220, 220, 0.5);">"OK"</span></font>）时，<code>responseText</code>是全部后端的返回数据</p>
<h2 id="例子">例子</h2>
<pre class="brush: js">var xhr = new XMLHttpRequest();
xhr.open('GET', '/server', true);
// If specified, responseType must be empty string or "text"
xhr.responseType = 'text';
xhr.onload = function () {
if (xhr.readyState === xhr.DONE) {
if (xhr.status === 200) {
console.log(xhr.response);
console.log(xhr.responseText);
}
}
};
xhr.send(null);</pre>
<h2 id="格式">格式</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">格式</th>
<th scope="col">状态</th>
<th scope="col">备注</th>
</tr>
<tr>
<td>{{SpecName('XMLHttpRequest', '#the-responsetext-attribute')}}</td>
<td>{{Spec2('XMLHttpRequest')}}</td>
<td>WHATWG living standard</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</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>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}<sup>[1]</sup></td>
<td>{{CompatUnknown}}</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>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>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<p>[1] 在IE10前的版本请求完成时， XMLHttpRequest.responseText 的值为只读。</p>
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