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<meta charset="utf-8">5
<title>蜜蜂教程(mifengjc.com)</title>6
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function changeTabIndex() {8
document.getElementById('1').tabIndex = "3";9
document.getElementById('2').tabIndex = "2";10
document.getElementById('3').tabIndex = "1";11
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<p><a id="1" href="https://www.mifengjc.com">1</a></p>17
<p><a id="2" href="https://www.mifengjc.com">2</a></p>18
<p><a id="3" href="https://www.mifengjc.com">3</a></p>19
<input type="button" onclick="changeTabIndex()" value="改变标签索引">20
<p>试着先使用“Tab”按钮导航到链接之后你单击“改变标签索引”按钮。</p>21
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