效果显示：

代码

 //节点高亮var nodes = document.getElementsByClassName("layui-tree-txt");for (var i = 0; i < nodes.length; i++) {if (nodes[i].innerHTML === obj.data.title){nodes[i].style.color = "#006BF9";nodes[i].style.fontWeight = "bold";} else {nodes[i].style.color = "#555";nodes[i].style.fontWeight = "normal";}}

亲测使用