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---
title: InputEvent.isComposing
slug: Web/API/InputEvent/isComposing
translation_of: Web/API/InputEvent/isComposing
---
<p>{{APIRef("DOM Events")}}</p>
<p>The <code><strong>InputEvent.isComposing</strong></code> read-only property returns a {{jsxref("Boolean")}} value indicating if the event is fired after {{event("compositionstart")}} and before {{event("compositionend")}}.</p>
<h2 id="这是一个只读属性，返回boolean类型。表示正处于输入事件的开始与结束之间，表示正在输入状态。">这是一个只读属性，返回boolean类型。表示正处于输入事件的开始与结束之间，表示正在输入状态。</h2>
<h2 id="Syntax">Syntax</h2>
<pre class="syntaxbox">var <em>bool</em> = <em>event</em>.isComposing;</pre>
<h2 id="Example">Example</h2>
<pre class="brush: js">var inputEvent = new InputEvent("syntheticInput", false);
console.log(inputEvent.isComposing); // return false
</pre>
<h2 id="Specifications" name="Specifications">Specifications</h2>
<table class="standard-table" style="height: 49px; width: 1000px;">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('DOM3 Events','#widl-InputEvent-isComposing','InputEvent.isComposing')}}</td>
<td>{{Spec2('DOM3 Events')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
{{Compat("api.InputEvent.isComposing")}}
<h2 class="note" id="See_also">See also</h2>
<ul>
<li>{{ event("compositionstart") }} and {{ event("compositionend")}}</li>
<li>{{domxref("InputEvent")}}</li>
</ul>
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