javaScript 案例（一）

1.Dom操作：树形遍历html标签

<script type="text/javascript">var str="";function listNodes(node,level){printInfo(node,level);level++;var nodes=node.childNodes;for(var x=0;x<nodes.length;x++){if(nodes[x].hasChildNodes()){listNodes(nodes[x],level);}elseprintInfo(nodes[x],level);}}function getSpace(level){var s="";for(var x=0;x<level;x++){s+="---";}return s;}function printInfo(node,level){str+=getSpace(level)+""+node.nodeName+"..."+node.nodeType+"..."+node.nodeValue+"<br/>";}function getNodes(){listNodes(document,0);document.write(str);}</script>