---
title: onmessage
slug: Web/API/WindowEventHandlers/onmessage
translation_of: Web/API/WindowEventHandlers/onmessage
---
<p>{{APIRef("HTML DOM")}}{{ SeeCompatTable() }}</p>

<p>{{domxref("WindowEventHandlers")}}的<code><strong>onmessage</strong></code><strong> 属性是当对象接收到</strong>{{event("message")}} <strong>事件时被调用的</strong>{{event("Event_handlers", "event handler")}} <strong>.</strong></p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">window.addEventListener('message', function(event) { ... })
window.onmessage = function(event) { ... }</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('HTML WHATWG','#handler-window-onmessage','onmessage')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

{{Compat("api.WindowEventHandlers.onmessage")}}