elementUI-tree組件 懶加載

 

<el-tree ref="tree" :data="menu.treeData" :props="menu.defaultProps"
                                         :filter-node-method="filterNode"
                                         :expand-on-click-node="false"
                                         :load="loadTreeNodes"
                                         lazy
                                         @node-click="handleNodeClick">

 

 loadTreeNodes: function (node, resolve) {
                if (node.level === 0) { // 第一次調用
                    return resolve(this.doLoadTreeNodes("0"));
                }
                if (node.level >= 1) { // 點擊之后觸發
                    return resolve(this.doLoadTreeNodes(node.data.id));
                }
            },