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---
title: window.name
slug: Web/API/Window/name
tags:
- API
- HTML DOM
- Property
- Reference
- Window
translation_of: Web/API/Window/name
---
<div>{{ApiRef}}</div>
<p class="summary"><span class="seoSummary">ウィンドウ名を取得 / 設定します。</span></p>
<h2 id="Syntax" name="Syntax">構文</h2>
<pre class="syntaxbox"><var>string</var> = window.name;
window.name = <var>string</var>;
</pre>
<h2 id="Example" name="Example">例</h2>
<pre class="brush:js">window.name = "lab_view";
</pre>
<h2 id="Notes" name="Notes">注記</h2>
<p>ウィンドウ名は、主にハイパーリンクとフォームのターゲットを設定するために使われます。ウィンドウは必ずしもウィンドウ名を持つ必要はありません。</p>
<p>It has also been used in some frameworks for providing cross-domain messaging (e.g., <a href="http://www.thomasfrank.se/sessionvars.html">SessionVars</a> and Dojo's <a href="http://www.sitepen.com/blog/2008/07/22/windowname-transport/">dojox.io.windowName</a>) as a more secure alternative to JSONP. Modern web applications hosting sensitive data should however not rely on <code>window.name</code> for cross-domain messaging but instead rather utilize the <a href="/ja/docs/Web/API/Window/postMessage">postMessage API</a>.</p>
<p>Don't set the value to something unstring since its get method will call the toString method.</p>
<h2 id="Specifications" name="Specifications">仕様</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">仕様</th>
<th scope="col">状態</th>
<th scope="col">コメント</th>
</tr>
<tr>
<td>{{SpecName('HTML WHATWG', 'browsers.html#dom-name', 'Window.name')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('HTML5 W3C', 'browsers.html#dom-name', 'Window.name')}}</td>
<td>{{Spec2('HTML5 W3C')}}</td>
<td> </td>
</tr>
</tbody>
</table>
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