easyUI

单击收缩折叠菜单：

onSelect: function(node) {  $(this).tree(node.state === 'closed' ? 'expand' : 'collapse', node.target);               node.state = node.state === 'closed' ? 'open' : 'closed'; } 
双击击收缩折叠菜单：
onDbClick: function(node) {  $(this).tree(node.state === 'closed' ? 'expand' : 'collapse', node.target);               node.state = node.state === 'closed' ? 'open' : 'closed'; }