function insertNode(data, key, newNode) { function fn(data) { for (var i = 0; i < data.length; i++) { if (data[i].key == key) { if (!data[i].children) { data[i].children = newNode; const temp = data[i]; data.splice(0, 1, temp); } } else { if (data[i].children && data[i].children.length > 0) { fn(data[i].children); } } } } fn(data); }insertNode(this.dirList, lastkey, newNode);给tree的某一层添加子节点成功后，页面未刷新， 如何才能正常刷新呢