From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: HTMLElement.tabIndex
+slug: Web/API/HTMLElement/tabIndex
+translation_of: Web/API/HTMLOrForeignElement/tabIndex
+---
+<div>
+<div>{{ APIRef("HTML DOM") }}</div>
+</div>
+
+<h3 id="Summary" name="Summary">概述</h3>
+
+<p>获取或设置当前元素的tab键激活顺序.</p>
+
+<h3 id="Syntax" name="Syntax">语法</h3>
+
+<pre class="eval">element.tabIndex = <em>index </em><em>index </em>= element.tabIndex
+</pre>
+
+<h3 id="Parameters" name="Parameters">参数</h3>
+
+<ul>
+ <li><code>index</code>是一个数字,表示顺序。取值需要在0到32767之间。</li>
+</ul>
+
+<p>Tab键的遍历顺序是这样的：</p>
+
+<ol>
+ <li>对于tabIndex值为正数的元素，如果多个元素的tabIndex值相同，则以他们出现在字符流中的次序来遍历；否则按tabIndex值由小到大的顺序来遍历。</li>
+ <li>对于不支持tabIndex属性或支持tabIndex属性并将其赋值为0的元素，按照他们出现在字符流中的次序来遍历。</li>
+ <li>处于不可用状态的元素不会被遍历到。</li>
+</ol>
+
+<p>支持tabIndex属性的元素有：a,area,button,input,object,select和textarea<font face="monospace" size="3"><span style="line-height: 19.5px;">。</span></font></p>
+
+<p>tabIndex的值不需要是连续的，也不需要以某个特定值开始。</p>
+
+<h3 id="Example" name="Example">例子</h3>
+
+<pre>var b1 = document.getElementById("button1");
+b1.tabIndex = 1;
+</pre>
+
+<h3 id="Specification" name="Specification">规范</h3>
+
+<p><a class="external" href="http://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-40676705">W3C DOM Level 2 HTML tabIndex</a></p>
+
+<p>了解更多,请查看: <a href="/zh-cn/Key-navigable_custom_DHTML_widgets#The_solution:_changes_to_standard_behavior_of_tabindex" title="zh-cn/Key-navigable_custom_DHTML_widgets#The_solution:_changes_to_standard_behavior_of_tabindex">The solution: changes to standard behavior of tabindex</a></p>
+
+<p>{{ languages( { "ja": "ja/DOM/element.tabIndex", "fr": "fr/DOM/element.tabIndex", "pl": "pl/DOM/element.tabIndex" , "en": "en/DOM/element.tabIndex" } ) }}</p>
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