方法一:
this.setAllExpand1(true); // 全部展开
setAllExpand1(state) {
for (let i = 0; i < this.$refs.tree.store._getAllNodes().length; i++) {
this.$refs.tree.store._getAllNodes()[i].expanded = state;
}
},
方法二:
this.setAllExpand2(true); // 全部展开
setAllExpand2(state) {
var nodes = this.$refs.tree.store.nodesMap;
for (var i in nodes) {
nodes[i].expanded = state;
}
},
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