---
title: WindowEventHandlers.onstorage
slug: Web/API/WindowEventHandlers/onstorage
tags:
  - API
  - Event Handler
  - Property
  - Reference
  - Web Storage
  - WindowEventHandlers
translation_of: Web/API/WindowEventHandlers/onstorage
---
<div class="syntaxbox">{{APIRef}}</div>

<p>{{domxref("WindowEventHandlers")}} 믹스인의 <strong><code>onstorage</code></strong> 속성은 <code><a href="/ko/docs/Web/API/Window/storage_event">storage</a></code> 이벤트를 처리하는 {{event("Event_handlers", "event handler")}}입니다.</p>

<p><code>storage</code> 이벤트는 다른 문서에서 저장소를 변경했을 때 발생합니다.</p>

<h2 id="구문">구문</h2>

<pre class="syntaxbox notranslate"><em> </em><em>window</em>.onstorage = <em>functionRef</em>;</pre>

<h3 id="값">값</h3>

<p><code>functionRef</code>는 함수 이름 혹은 <a href="/en-US/docs/Web/JavaScript/Reference/Operators/function">함수 표현식</a>으로, 단일 매개변수로써 {{domxref("StorageEvent")}}를 받습니다.</p>

<h2 id="예제">예제</h2>

<p>다음 예제는 다른 문서에서 저장소 키를 바꿀 때마다 메시지를 기록합니다.</p>

<pre class="brush: js notranslate">window.onstorage = function(e) {
  console.log('The ' + e.key +
    ' key has been changed from ' + e.oldValue +
    ' to ' + e.newValue + '.');
};</pre>

<h2 id="명세">명세</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','webappapis.html#handler-window-onstorage','onstorage')}}</td>
   <td>{{Spec2('HTML WHATWG')}}</td>
   <td></td>
  </tr>
 </tbody>
</table>

<h2 id="브라우저_호환성">브라우저 호환성</h2>



<p>{{Compat("api.WindowEventHandlers.onstorage")}}</p>

<h2 id="같이_보기">같이 보기</h2>

<ul>
 <li><a href="/ko/docs/Web/API/Window/storage_event">Window: <code>storage</code> 이벤트</a></li>
</ul>