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---
title: selectedIndex
slug: Mozilla/Tech/XUL/Attribute/selectedIndex
translation_of: Archive/Mozilla/XUL/Attribute/selectedIndex
---
<div class="noinclude">
<span class="breadcrumbs xulRefAttr_breadcrumbs">« <a href="/zh-CN/docs/XUL_Reference">XUL Reference home</a></span></div>
<dl>
<dt>
<code id="a-selectedIndex"><a href="https://developer.mozilla.org/zh-CN/docs/Mozilla/Tech/XUL/Attribute/selectedIndex">selectedIndex</a></code></dt>
<dd>
类型: 整数</dd>
<dd>
获取或设置当前所选面板的索引号,索引号从0开始.</dd>
</dl>
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