我的输出不对
<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>无标题文档</title></head><body><div> javascript <p>javascript</p> <div>jQuery</div> <h5>PHP</h5></div><script type="text/javascript"> var childN = document.getElementsByTagName("div")[0].childNodes; var x = 1; for (var i=0;i<childN.length;i++) { document.write("--"+"节点" + x + "--" + "<br />"); document.write("节点名称："+childN.nodeName+"<br />"); document.write("节点值："+childN.nodeValue+"<br />"); document.write("节点类型："+childN.nodeType+"<br />"); document.write("<br />"); x++; }</script></body></html>怎么我的输出全是undefind呢？
