[ js ] 請問JAVASCRIPT判斷元素是否在陣列中
我想請問JAVASCRIPT
如何判斷元素是否在陣列中
我是把ㄧ個資料表的
有請假資料取出來放在函式的一個陣列
之後透過呼叫return回那一個陣列
之後在用那個月的每一天
是否存在回傳的陣列中元素值
如果有的話就把當天標記下來
不知道要如何判斷元素是否在陣列中
謝謝!
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推
09/19 00:31, , 1F
09/19 00:31, 1F
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09/19 01:13, , 2F
09/19 01:13, 2F
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09/19 01:14, , 3F
09/19 01:14, 3F
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09/19 03:48, , 4F
09/19 03:48, 4F
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09/19 16:29, , 5F
09/19 16:29, 5F
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09/19 16:30, , 6F
09/19 16:30, 6F
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09/19 16:31, , 7F
09/19 16:31, 7F
→
09/19 16:31, , 8F
09/19 16:31, 8F
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09/23 03:04, , 9F
09/23 03:04, 9F
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09/23 03:04, , 10F
09/23 03:04, 10F
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09/23 17:03, , 11F
09/23 17:03, 11F
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09/23 17:04, , 12F
09/23 17:04, 12F