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# FineUI中如何格式化输出日期
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`BI.print(date,formatStr)`
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如果你不知道用什么,那么直接`%Y-%X-%d %H:%M:%S`
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约定当前日期为2022年十月八日
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## 输出基本年月日格式
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```javascript
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BI.print(BI.getDate(), "%Y-%X-%d") // '2022-10-08'
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BI.print(BI.getDate(), "%Y-%x-%e") // '2022-10-08'
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BI.print(BI.getDate(), "%X/%d/%Y") // '10/08/2022'
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```
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## 输出时分秒格式
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```javascript
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BI.print(BI.getDate(), "%H:%M:%S") // '16:14:26'
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BI.print(BI.getDate(), "%I:%M:%S") // '04:14:26'
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BI.print(BI.getDate(), "%k:%M:%S") // '16:14:26'
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BI.print(BI.getDate(), "%l:%M:%S") // '4:14:26'
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```
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## AM与PM区分
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```javascript
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BI.print(BI.getDate(), "%l:%M:%S %p") // '4:26:12 PM'
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BI.print(BI.getDate(), "%l:%M:%S %P") // '4:26:12 pm'
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```
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## 星期
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```javascript
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BI.print(BI.getDate(), "%Y-%X-%d %u") // '2022-10-08 7' the day of the week (range 1 to 7, 1 = MON)
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BI.print(BI.getDate(), "%Y-%X-%d %w") // '2022-10-08 6' the day of the week (range 0 to 6, 0 = SUN)
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```
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## 每年的第几周
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```javascript
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BI.print(BI.getDate(), "%Y-%W") // '2022-40'
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```
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## 季度
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```javascript
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BI.print(BI.getDate(), "%Y-%Q") // '2022-4'
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BI.print(BI.getDate(), "%Y-%q") // '2022-04'
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```
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