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追加节点
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Insert title here</title> <style type="text/css"> li{border:1px solid red;} div{border:5px solid green;} </style> </head> <body> <ul id="ul1"><li>li-1</li><li>li-2</li><li>li-3</li><li>li-4</li><li>li-5</li></ul> <div id="div1">div-1</div> <input type="button" value="给ul追加子li"/> <input type="button" value="给div1追加哥哥"/> <input type="button" value="把ul下li全部去掉"/> </body> </html> <script type="text/javascript"> var i=0; document.getElementsByTagName(‘input‘)[0].onclick=function(){ i++; ob=document.createElement("li"); ob.innerHTML="li-"+i; document.getElementById("ul1").appendChild(ob); } document.getElementsByTagName(‘input‘)[1].onclick=function(){ divOb=document.getElementById("div1"); ob1=document.createElement("div"); ob1.innerHTML="div-n"; document.body.insertBefore(ob1,divOb); } document.getElementsByTagName(‘input‘)[2].onclick=function(){ var fOb=document.getElementById(‘ul1‘); var cOb=document.getElementById(‘ul1‘).childNodes; alert(cOb.length); for(var i=cOb.length-1;i>=0;i--){ fOb.removeChild(cOb[i]); } } </script>
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原文地址：http://www.cnblogs.com/wangjinke/p/4784441.html
