//这里用的是methods事件并非watch监听this.zhishi 也不需要 handleNodeClick(data) { this.zhishi.push(data.label); this.zhishi=Array.from(new Set(this.zhishi)); },
vue动态点击添加数组并去重
原文：https://www.cnblogs.com/chenchenhao/p/10436229.html
