我想用2个不同的值字段对javascript对象数组进行分组，然后将结果映射到我的链接。 源：
[{"date":"2012-05-01","casinoName":"Grand Orient Casino","type":"Other","number":"68"},{"date":"2012-06-01","casinoName":"Grand Orient Casino","type":"Free Coins","number":"11"},{"date":"2012-06-01","casinoName":"slotCasino","type":"New Game","number":"40"},{"date":"2012-07-01","casinoName":"Slotomania","type":"Other","number":"17"}]
结果预期：
[{"date":"2012-05-01","Grand Orient Casino Other":"68"},{"date":"2012-06-01","Grand Orient Casino Free Coins":"11", "slotCasino New Game":"40"},{"date":"2012-07-01","Slotomania Other":"17"}]
那我在做什么？ 我将casinoName和type值映射为我的键，我的值是number的值。然后我按日期对它们进行分组。 我有问题，因为有效率这样做。 欢迎任何帮助。