我正在尝试使用loadsh从以下数组中获取唯一的类别。
但是上面的代码返回了同样的数组。如何得到输出结果为“VIP PASS和WIP”呢?
[{
"listingId": "p106a904a-b8c6-4d2d-a364-0d21e3505010",
"section": "section1",
"category": "VIP PASS ",
"type": "paper",
"availableTickets": 1
}, {
"listingId": "p106904a-b8c6-4d2d-a364-0d21e3505010",
"section": "section1",
"category": "VIP PASS ",
"type": "paper",
"availableTickets": 2
}, {
"listingId": "pc8f54389-4e58-482a-9535-6917c2948764",
"section": "1",
"category": "WIP",
"type": "paper",
"availableTickets": 1
}]
这是我尝试过的内容
this.categories = _.uniq(this.listings, function (test: ListDAO) { return test.category; });
但是上面的代码返回了同样的数组。如何得到输出结果为“VIP PASS和WIP”呢?