JavaScript 节点知识

<script type="text/javascript">


var a=document.getElementById("students");

var n=a.childNodes; 

        获取table的子节点

 遍历table的子节点
for(var i=0;i<n.length;i++){
if(n[i].nodeName.toUpperCase()=='TBODY'){

var trs=n[i].childNodes;  

                        获取所有tr

for(var j=0;j<trs.length;j++){
if(trs[j].nodeName!='text'){

var tds=trs[j].childNodes;

                                        获取所有td

for(var k=0;k<tds.length;k++){
if(tds[k].nodeName!='#text'){

alert(tds[k].innerHTML);  

                                                        显示节点的内容

}//end if
}//end for
}//end if
}//end for
}//end if
}//end for


</script>