看到网上这个程序 发现了处错误这里改正了一下：
function counter() { var date = new Date(); var year = date.getFullYear(); var date2 = new Date(year, 11, 30, 23, 59, 59); /*转换成秒*/ var time = (date2 - date) / 1000; var day = Math.floor(time / (24 * 60 * 60)) var hour = Math.floor(time % (24 * 60 * 60) / (60 * 60)) var minute = Math.floor(time % (24 * 60 * 60) % (60 * 60) / 60); var second = Math.floor(time % (24 * 60 * 60) % (60 * 60) % 60); var str = year + "年还剩" + day + "天" + hour + "时" + minute + "分" + second + "秒"; console.log(str); } window.setInterval("counter()", 1000); 这是我自己写的
var oDateNow = new Date();var oYear = oDateNow.getFullYear();var oDateEnd = new Date();oDateEnd.setFullYear(oYear+1);oDateEnd.setMonth(0);oDateEnd.setDate(0);oDateEnd.setHours(0);oDateEnd.setMinutes(0);oDateEnd.setSeconds(0);function upDate(){var oDateNow = new Date();var iTime = oDateEnd.getTime()-oDateNow.getTime();var iRemain = iTime/1000;var iDay=parseInt(iRemain/86400);iRemain%=86400;var iHour=parseInt(iRemain/3600);iRemain%=3600;var iMin=parseInt(iRemain/60);iRemain%=60;var iSec=parseInt(iRemain);document.write(oYear+"年还剩"+iDay+"天"+iHour+"时"+iMin+"分"+iSec+"秒");}setInterval(function(){ upDate() },1000);这两个方法的秒数有出处
以上所述是小编给大家介绍的JavaScript 网页中实现一个计算当年还剩多少时间的倒数计时程序，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
