代码 < html > < head > < title > 日期插件 </ title > </ head > < body > < script type ="text/javascript" > function myDate() { function formatDate(d) { var _todayDate = d.getDate(); var _year = d.getYear(); ! document.addEventListener || (_year += 1900 ); var _month = d.getMonth() + 1 ; return _year + " - " + _month + " - " + _todayDate; } var now = new Date(), dd = new Date(); var n = now.getDay(); function check(date,m) { for ( var i = 0 ;i < 7 ; i ++ ) { var datevalue = now.getDate() - n + m + i + 1 ; var month = now.getMonth() + 1 ; if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 ) { if (datevalue > 31 ) { if ( m < 0 && month - 1 != 2 ) { dd.setDate( 31 - ( 30 - datevalue)); dd.setMonth(month) } else { dd.setDate(datevalue - 31 ); dd.setMonth(month); } } else { dd.setDate(datevalue); } } else if (month == 4 || month == 6 || month == 9 || month == 11 ) { if (datevalue > 30 ) { if ( m < 0 && month - 1 != 2 ) { dd.setDate( 31 - ( 30 - datevalue)); dd.setMonth(month) } else { dd.setDate(datevalue - 30 ); dd.setMonth(month); } } else { dd.setDate(datevalue); } } else if (month == 2 ) { if (datevalue > 28 ) { dd.setDate(datevalue - 28 ); m >= 0 ? dd.setMonth(month + 1 ) : dd.setMonth(month - 1 ); } else { dd.setDate(datevalue); } } date.push(formatDate(dd)); } } return { currWeek : function () { var date = []; check(date, 0 ); return date; }, nextWeek : function () { var date = []; check(date, 7 ); return date; }, prevWeek : function () { var date = []; check(date, - 7 ); return date; } } } var s = new myDate(); document.write( " 上星期的每天日期： " + s.prevWeek() + " <br /> " + " 本星期的每天日期； " + s.currWeek() + " <br /> " + " 下星期的每天日期： " + s.nextWeek()); </ script > </ body > </ html >
转载于:https://www.cnblogs.com/daxiami/archive/2010/08/24/1807710.html
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