Практическое задание: Календарь HTML

function setToday() {

var now = new Date();

var day = now.getDate();

var month = now.getMonth();

var year = now.getYear();

if (year

year = year + 1900; // http://onyx.idbsu.edu/~ipowell

this.focusDay = day;

document.calControl.month.selectedIndex = month;

document.calControl.year.value = year;

displayCalendar(month, year);

}

function isFourDigitYear(year) {

if (year.length != 4) {

alert ("В году должно быть четыре цифры.");

document.calControl.year.select();

document.calControl.year.focus();

} else { return true; }

}

function selectDate() {

var year = document.calControl.year.value;

if (isFourDigitYear(year)) {

var day = 0;

var month = document.calControl.month.selectedIndex;

displayCalendar(month, year);

}

}

function setPreviousYear() {

var year = document.calControl.year.value;

if (isFourDigitYear(year)) {

var day = 0;

var month = document.calControl.month.selectedIndex;

year--;

document.calControl.year.value = year;

displayCalendar(month, year);

}

}

function setPreviousMonth() {

var year = document.calControl.year.value;

if (isFourDigitYear(year)) {

var day = 0;

var month = document.calControl.month.selectedIndex;

if (month == 0) {

month = 11;

if (year 1000) {

year--;

document.calControl.year.value = year;

}

} else { month--; }

document.calControl.month.selectedIndex = month;

displayCalendar(month, year);

}

}

function setNextMonth() {

var year = document.calControl.year.value;

if (isFourDigitYear(year)) {

var day = 0;

var month = document.calControl.month.selectedIndex;

if (month == 11) {

month = 0;

year++;

document.calControl.year.value = year;

} else { month++; }

document.calControl.month.selectedIndex = month;

displayCalendar(month, year);

}

}

function setNextYear() {

var year = document.calControl.year.value;

if (isFourDigitYear(year)) {

var day = 0;

var month = document.calControl.month.selectedIndex;

year++;

document.calControl.year.value = year;

displayCalendar(month, year);

}

}

function displayCalendar(month, year) {

month = parseInt(month);

year = parseInt(year);

var i = 0;

var days = getDaysInMonth(month+1,year);

var firstOfMonth = new Date (year, month, 1);

var startingPos = firstOfMonth.getDay();

days += startingPos;

document.calButtons.calPage.value = " Вс Пн Вт Ср Чт Пт Сб";

document.calButtons.calPage.value += "\n --------------------";

for (i = 0; i

if ( i%7 == 0 ) document.calButtons.calPage.value += "\n ";

document.calButtons.calPage.value += " ";

}

for (i = startingPos; i

if ( i%7 == 0 ) document.calButtons.calPage.value += "\n ";

if (i-startingPos+1

document.calButtons.calPage.value += "0";

document.calButtons.calPage.value += i-startingPos+1;

document.calButtons.calPage.value += " ";

}

for (i=days; i

if ( i%7 == 0 ) document.calButtons.calPage.value += "\n ";

document.calButtons.calPage.value += " ";

}

document.calControl.Go.focus();

}

function getDaysInMonth(month,year) {

var days;

if (month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12) days=31;

else if (month==4 || month==6 || month==9 || month==11) days=30;

else if (month==2) {

if (isLeapYear(year)) { days=29; }

else { days=28; }

}

return (days);

}

function isLeapYear (Year) {

if (((Year % 4)==0) && ((Year % 100)!=0) || ((Year % 400)==0)) {

return (true);

} else { return (false); }

}

Выберите месяц и год

(впишите год и нажмите кнопку "Сделать!")

Можно использовать прокрутку