Ext 遍历树的所有节点

/**
  * 调用的地方
  */

var rootNode = btn.ownerCt.ownerCt.getRootNode();
// var rootNode = Ext.getCmp('deptmentTee').getRootNode();
var nodeList = traverseTree(rootNode);

/**
 * Ext 遍历 tree 的所有节点
 * @param node
 * @returns {}
 */
function traverseTree(node){
	var n = {};
	n.id = node.id;
	n.name = node.text;
	n.parentid = node.attributes.parentid;
	n.isleaf = (node.hasChildNodes()?0:1);
	n.type = node.attributes.type;
	
	if(node.isLeaf()){
		
	} else {
		var cds = node.childNodes;
		var arr = [];
		for (var i=0; i<cds.length; i++) {
			arr.push(traverseTree(cds[i]));
		}
		n.children = arr;
	}
	
	return n;
}