代碼如下:
<strong>數(shù)據(jù)源:</strong>
<ul>
<li>錯(cuò)新站長(zhǎng)站</li>
<ul>
<li>a_1</li>
<li>a_2</li>
<li>a_3</li>
</ul>
<li>m.survivalescaperooms.com</li>
<li>www.kanshule.com</li>
</ul>

<script>
document.write("<strong>取外層ul的li信息:</strong><br>");
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document.write("<br><br><strong>取內(nèi)層ul的li信息:</strong><br>");

var tree2 = document.getElementsByTagName("ul")[1].childNodes;
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document.write(tree2[i].innerHTML);
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</script>