剛寫完分享下答案
<!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>
<!--<div id="con">-->
<!--? <p>javascript</p>-->
<!--? <div>jQuery</div>-->
<!--? <h5>PHP</h5>-->
<!--</div>-->
<div id="con"><p>javascript</p><div>jQuery</div><h5>PHP</h5></div>
<script type="text/javascript">
? var x=document.getElementById("con");
? function write(a){
? ? ? ? document.write("節(jié)點(diǎn)的名稱:"+a.nodeName+"<br/>");
? ? ? ? document.write("節(jié)點(diǎn)的值:"+a.nodeValue+"<br/>");
? ? ? ? document.write("節(jié)點(diǎn)的類型:"+a.nodeType+"<br/>");
? ? ? ? document.write("-----------------------"+"<br/>");
? }?
? write(x.firstChild);
? write(x.lastChild);
</script>
</body>
</html>
2019-05-24
document.write(document.getElementById("con").firstChild.nodeType+"<br />"+document.getElementById("con").firstChild.nodeName)
2019-04-20
非常棒!
2019-03-30
<!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>
<div id="con">
? <p>javascript</p>
? <div>jQuery</div>
? <h5>PHP</h5>
? </div>
<div id="con"><p>javascript</p><div>jQuery</div><h5>PHP</h5></div>?
<script type="text/javascript">
? var x=document.getElementById("con");
?document.write("指定元素的第一個(gè)子節(jié)點(diǎn)"+x.firstChild.nodeName+" "+x.firstChild.nodeValue+" "+x.firstChild.nodeType+"<br/>");
?document.write("指定元素的最后一個(gè)子節(jié)點(diǎn)"+x.lastChild.nodeName+" "+x.firstChild.nodeValue+" "+x.firstChild.nodeType);
</script>
</body>
</html>