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（转）

function counter() {

var date = new Date();

var year = date.getFullYear();

var date2 = new Date(year, 12, 31, 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);