MediaWiki:Countdown.js

function updatetimer(i) { var now = new Date; var then = timers[i].eventdate; var diff = count=Math.floor((then.getTime-now.getTime)/1000); // catch bad date strings if(isNaN(diff)) { timers[i].firstChild.nodeValue = '** ' + timers[i].eventdate + ' **' ; return; } // determine airing - will/is/has if(diff<=0 && diff>=-3000) { timers[i].firstChild.nodeValue = 'is on air'; return; } if(diff<-3000) { timers[i].firstChild.nodeValue = 'has aired'; return; } if(diff>0) { var tpm = 'will air in '; } // Calculate the diff diff=Math.floor(diff/60); if(diff > 0) { if ((diff%60) == 1) { left = (diff%60) + ' minute'; } else { left = (diff%60) + ' minutes'; } }    diff=Math.floor(diff/60); if(diff > 0) { if ((diff%24) == 1) { left = (diff%24) + ' hour, and ' + left; } else { left = (diff%24) + ' hours, and ' + left; } }    diff=Math.floor(diff/24); if(diff > 0) { if (diff == 1) { left = diff + ' day, and ' + left; } else { left = diff + ' days, and ' + left; } }  timers[i].firstChild.nodeValue = tpm + left; // a setInterval is more efficient, but calling setTimeout // makes errors break the script rather than infinitely recurse timeouts[i] = setTimeout('updatetimer(' + i + ')',1000); } function checktimers { //hide 'nocountdown' and show 'countdown' var nocountdowns = getElementsByClassName(document, 'span', 'nocountdown'); for(var i in nocountdowns) nocountdowns[i].style.display = 'none' var countdowns = getElementsByClassName(document, 'span', 'countdown'); for(var i in countdowns) countdowns[i].style.display = 'inline' //set up global objects timers and timeouts. timers = getElementsByClassName(document, 'span', 'countdowndate'); //global timeouts = new Array; // generic holder for the timeouts, global if(timers.length == 0) return; for(var i in timers) { timers[i].eventdate = new Date(timers[i].firstChild.nodeValue); updatetimer(i); //start it up  } } addOnloadHook(checktimers);