Baseline Widely available
Date
å®ä¾ç setUTCHours()
æ¹æ³ç¨äºæ ¹æ®ä¸çåè°æ¶æ´æ¹æ¥æå¯¹è±¡çå°æ¶ãåéãç§ææ¯«ç§ã
const event = new Date("August 19, 1975 23:15:30 GMT-3:00");
console.log(event.toUTCString());
// Expected output: "Wed, 20 Aug 1975 02:15:30 GMT"
console.log(event.getUTCHours());
// Expected output: 2
event.setUTCHours(23);
console.log(event.toUTCString());
// Expected output: "Wed, 20 Aug 1975 23:15:30 GMT"
è¯æ³
setUTCHours(hoursValue)
setUTCHours(hoursValue, minutesValue)
setUTCHours(hoursValue, minutesValue, secondsValue)
setUTCHours(hoursValue, minutesValue, secondsValue, msValue)
åæ°
hoursValue
0 å° 23 ä¹é´çæ´æ°ï¼è¡¨ç¤ºå°æ¶æ°ã
minutesValue
å¯é
0 å° 59 ä¹é´çæ´æ°ï¼è¡¨ç¤ºåéæ°ã
secondsValue
å¯é
0 å° 59 ä¹é´çæ´æ°ï¼ä»£è¡¨ç§æ°ã妿æå®äº secondsValue
ï¼åå¿
须忶æå® minutesValue
ã
msValue
å¯é
0 å° 999 ä¹é´çæ´æ°ï¼è¡¨ç¤ºæ¯«ç§æ°ã妿æå®äº msValue
ï¼åå¿
须忶æå® minutesValue
å secondsValue
ã
è¯¥æ¹æ³ä¼åå°ä¿®æ¹ Date
对象ï¼å¹¶è¿åå
¶æ°çæ¶é´æ³ãå¦æåæ°ä¸º NaN
ï¼æå
¶ä»ä¼è¢«å¼ºå¶è½¬æ¢ä¸º NaN
çå¼ï¼ä¾å¦ undefined
ï¼ï¼åæ¥æä¼è¢«è®¾ç½®ä¸ºæ ææ¥æï¼å¹¶è¿å NaN
ã
å¦æä½ æªæå® minutesValue
ãsecondsValue
å msValue
åæ°ï¼é£ä¹å°ä½¿ç¨ getUTCMinutes()
ãgetUTCSeconds()
å getUTCMilliseconds()
æ¹æ³è¿åçå¼ã
å¦æä½ æå®çåæ°è¶
åºäºé¢æèå´ï¼setUTCHours()
ä¼å°è¯ç¸åºå°æ´æ° Date
对象ä¸çæ¥æä¿¡æ¯ãä¾å¦ï¼å¦æä½ å° secondsValue
设置为 100ï¼åéæ°å°å¢å 1ï¼minutesValue + 1
ï¼ï¼èç§æ°å°å为 40ã
const theBigDay = new Date();
theBigDay.setUTCHours(8);
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