dtree点击内容，展开叶子

注：vue 下引入dtree

let dtree = window.layui.dtree, layer = window.layui.layer, $ = window.layui.jquery;
let dTree = dtree.render({
	elem: "#goodsTree",
	data: that.goods,
	line: true,
	ficon: ["1","-1"],
	icon: "-1"
	
});
dtree.on("node('goodsTree')" ,function(obj){
  if(!obj.param.leaf){
		var $div = obj.dom;
		dTree.clickSpread($div);  //调用内置函数展开节点
	}
});