element tree怠惰ロード

loadNode1(node, resolve) {
		      	if (node.level === 0) {
		      		return;
		      	} else {
		      		if (node.store.currentNode != null) {
		      			if (node.store.currentNode.data.nodeTypeCode != '1') {
		      				if (node.store.currentNode.data.children) {
		      					resolve(node.store.currentNode.data.children);
		      				} else {
		      					resolve([]);
		      				}
		      			} else {
		      				if (node.store.currentNode.data.children) {
		      					resolve(node.store.currentNode.data.children);
		      				} else {
		      					if (node.store.currentNode.data.nodeIsid) {
			      					video(node.store.currentNode.data.nodeIsid).then((res) => {
				      					res.data.forEach((v, i, a) => {
				      						v.nodeName = a[i].dvName;
				      					});
				      					resolve(res.data);
				      				});
			      				}
		      				}
		      				
		      			}
		      		}
		      	}
		    }