摘要:
var i = 1000; var count = 0; while(i <= 2000) { if (i % 2 == 0 && i % 100 !=0 || i % 400 == 0) { document.write(i, " "); count++; if(count % 4 == 阅读全文
摘要:
var month = 7; var year = new Date().getFullYear(); switch(month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: alert(`${year}年${month}月 阅读全文
摘要:
var year = 2020; // 闰年公式:是4的倍数且不是100的倍数 或者是400的倍数 if (year % 2== 0 && year % 100 != 0 || year % 400 == 0) { alert(year + "是闰年"); } else { alert(year + 阅读全文