Baseline Widely available
getDay()
æ¹æ³æ ¹æ®æ¬å°æ¶é´ï¼è¿åä¸ä¸ªå
·ä½æ¥æä¸ä¸å¨ç第å 天ï¼0 表示ææå¤©ãå¯¹äºæä¸ªæä¸ç第å 天ï¼åèDate.prototype.getDate()
.
const birthday = new Date("August 19, 1975 23:15:30");
const day1 = birthday.getDay();
// Sunday - Saturday : 0 - 6
console.log(day1);
// Expected output: 2
è¯æ³ è¿åå¼
æ ¹æ®æ¬å°æ¶é´ï¼è¿åä¸ä¸ª 0 å° 6 ä¹é´çæ´æ°å¼ï¼ä»£è¡¨ææå ï¼0 ä»£è¡¨æææ¥ï¼1 代表ææä¸ï¼2 代表ææäºï¼ä¾æ¬¡ç±»æ¨ã
ç¤ºä¾ ä½¿ç¨getDay()
ä¸é¢ç¬¬äºæ¡è¯å¥ï¼åºäºDate
对象 Xmas95
çå¼ï¼æ 1 èµå¼ç» weekday
ãä¹å°±æ¯è¯´ 1995 å¹´ 12 æ 25 æ¥æ¯ææä¸ã
var Xmas95 = new Date("December 25, 1995 23:15:30");
var weekday = Xmas95.getDay();
console.log(weekday); // 1
夿³¨ï¼ 妿éè¦ï¼å¯ä»¥ä½¿ç¨Intl.DateTimeFormat
ä¸ä¸ä¸ªé¢å¤çoptions
åæ°ï¼ä»èè¿åè¿å¤©çå
¨ç§°ï¼å¦"Monday"
ï¼.ä½¿ç¨æ¤æ¹æ³ï¼ç»æä¼æ´å å½é
åï¼
var options = { weekday: "long" };
console.log(new Intl.DateTimeFormat("en-US", options).format(Xmas95));
// Monday
console.log(new Intl.DateTimeFormat("de-DE", options).format(Xmas95));
// Montag
è§è æµè§å¨å
¼å®¹æ§ åè§
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