Baseline Widely available
setMonth()
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const event = new Date("August 19, 1975 23:15:30");
event.setMonth(3);
console.log(event.getMonth());
// Expected output: 3
console.log(event);
// Expected output: "Sat Apr 19 1975 23:15:30 GMT+0100 (CET)"
// Note: your timezone may vary
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dateObj.setMonth(monthValue[, dayValue])JavaScript 1.3 çæ¬ä¹å
dateObj.setMonth(monthValue)åæ°
monthValue
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dayValue
ä» 1 å° 31 ä¹é´çæ´æ°ï¼è¡¨ç¤ºæä»½ä¸ç第å 天ã0 为ä¸ä¸ªææåä¸å¤©
åºäº 1 January 1970 00:00:00 UTC å¼å§è®¡ç®çæ¯«ç§æ°
å¦æä¸æå® dayValue
åæ°ï¼å°±ä¼ä½¿ç¨ getDate
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åºäºåçèå´ï¼setMonth
ä¼ç¸åºå°æ´æ°æ¥æå¯¹è±¡ä¸çæ¥æä¿¡æ¯ãä¾å¦ï¼ä¸º monthValue
æå® 15ï¼å年份ä¼å 1ï¼æä»½å°ä¼ä½¿ç¨ 3ã
setMonth
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var theBigDay = new Date();
theBigDay.setMonth(6);
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