| ===编写日历一=== 如果指定的年数可以被4整除，那么leapYear()函数将返回“true”，否则返回”false“：
function leapYear(year) { if (year % 4 == 0) // basic rule return true; // is leap year /* else */ // else not needed when statement is "return" return false; // is not leap year } getMonthName()函数返回指定月份的名字： function getMonthName(month) { // create array to hold name of each month var ar = new Array(12); ar[0] = "January"; ar[1] = "February"; ar[2] = "March"; ar[3] = "April"; ar[4] = "May"; ar[5] = "June"; ar[6] = "July"; ar[7] = "August"; ar[8] = "September"; ar[9] = "October"; ar[10] = "November"; ar[11] = "December"; // return name of specified month (parameter) return ar[month]; }
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