這大概是最簡(jiǎn)單的答案了吧
? ?var mylist = document.getElementById("tcon");
? ?var lis = mylist.parentNode.parentNode.parentNode;
? ?document.write(lis.lastChild.innerHTML);
河流午后我經(jīng)過(guò)
2019-01-24
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2019-03-27
var mylist = document.getElementById("tcon");?
? ? document.write(mylist.parentNode.parentNode.parentNode.lastChild.innerHTML);
2019-01-31
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>無(wú)標(biāo)題文檔</title>
</head>
<body>
<ul id="con">
<li id="lesson1">javascript
? <ul>?
? ? ? <li id="tcon"> 基礎(chǔ)語(yǔ)法</li>
? ? ? <li>流程控制語(yǔ)句</li>
? ? ? <li>函數(shù)</li>
? ? ? <li>事件</li>
? ? ? <li>DOM</li>
? </ul>
</li>
<li id="lesson2">das</li>
<li id="lesson3">dadf</li>
<li id="lesson4">HTML/CSS?
? <ul>
? ? <li>文字</li>
? ? <li>段落</li>
? ? <li>表單</li>
? ? <li>表格</li>??
? </ul>?
</li></ul>??
<script? type="text/javascript">? ??
? ?var mylist = document.getElementById("tcon");
? ?var lis = mylist.parentNode.parentNode.parentNode;
? ?document.write(lis.lastChild.innerHTML);
</script>?
</body>
</html>
2019-01-31
<!DOCTYPE?HTML><html><head><meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"><title>無(wú)標(biāo)題文檔</title></head><body><ul?id="con"><li?id="lesson1">javascript??<ul>???????<li?id="tcon">?基礎(chǔ)語(yǔ)法</li>??????<li>流程控制語(yǔ)句</li>??????<li>函數(shù)</li>??????<li>事件</li>??????<li>DOM</li>??</ul></li><li?id="lesson2">das</li><li?id="lesson3">dadf</li><li?id="lesson4">HTML/CSS???<ul>????<li>文字</li>????<li>段落</li>????<li>表單</li>????<li>表格</li>????</ul>?</li></ul>??<script??type="text/javascript">???????var?mylist?=?document.getElementById("tcon");???var?lis?=?mylist.parentNode.parentNode.parentNode;???document.write(lis.lastChild.innerHTML);</script>?</body></html>2019-01-31
我試了是undefinded
2019-01-31
輸出來(lái)了嗎