*/ // elementId = html-element to use // all other parameters are self-explanatory function countdown(elementId, year, month, date, hour, minute, second) { var countdownElement = document.getElementById(elementId); var validDate = false; var cdDate; var now; this.dateIsInThePast = false; // This is needed to access the parent object within class functions. // There may be some other way to do this. var self = this; if(checkValidDate(year, month, date, hour, minute, second)) { cdDate = new Date(year, month-1, date, hour, minute, second); now = new Date(); if(cdDate.getTime() - now.getTime() < 0) this.dateIsInThePast = true; validDate = true; } this.showCountdown = function() { if(!validDate) countdownElement.innerHTML = "Not a valid date!"; else updateCountdown(); } function updateCountdown() { now.setTime(now.getTime() + 1000); if(cdDate.getTime() - now.getTime() < 0) self.dateIsInThePast = true; if(!self.dateIsInThePast) { var mSeconds = cdDate.getTime() - now.getTime(); var seconds = ( mSeconds - mSeconds % 1000 ) / 1000; var days = ( seconds - seconds % (60*60*24) ) / (60*60*24); seconds = seconds - days * 60 * 60 * 24; var hours = ( seconds - seconds % (60*60) ) / (60*60); seconds = seconds - hours * 60 * 60; var minutes = ( seconds - seconds % 60 ) / 60; seconds = seconds - minutes * 60; } else { days = 0; hours = 0; minutes = 0; seconds = 0; } var br = "
"; countdownElement.innerHTML = days + " dag" + (( days != 1) ? "ar" : "") + br + hours + " timm" + (( hours != 1) ? "ar" : "e") + br + minutes + " minut" + (( minutes != 1) ? "er" : "") + " och" + br + seconds + " sekund" + (( seconds != 1) ? "er" : "") + br + "kvar till nästa BSLx2"; setTimeout(function() { updateCountdown(); },1000); } } function checkValidDate(year, month, date, hour, minute, second) { if(month > 12) return false; if(month == 2 && (date > 28 && !(date == 29 && isLeapYear(year)))) return false; if(date > 31) return false; if(date > 30 && (month == 4 || month == 6 || month == 9 || month == 11)) return false; if(hour > 23 || hour < 0) return false; if(minute > 59 || minute < 0) return false; if(second > 59 || second < 0) return false; return true; } function isLeapYear(year) { if (year % 400 == 0) return true; if (year % 100 == 0) return false; if (year % 4 == 0) return true; return false; } -->