最近做项目的时候，遇到了这个问题，js获得当年每周的信息，并且罗列出来。代码贴出来。
var getWeeks = function(year){
var d = new Date(year, 0, 1);
while (d.getDay() != 1) {
d.setDate(d.getDate() - 1);
}
var to = new Date(year + 1, 0, 1);
var i = 1;
for (var from = d; from < to;) {
var str = '';
str = str + "第" + i + "周 " +year+"-"+ ((from.getMonth() + 1)<=9?('0'+(from.getMonth() + 1)):(from.getMonth() + 1)) + "-" + (from.getDate()<=9?('0'+from.getDate()) : from.getDate()) + " 至 ";
from.setDate(from.getDate() + 6);
if (from < to) {
str = str + year +"-"+ ((from.getMonth() + 1)<=9?('0'+(from.getMonth() + 1)):(from.getMonth() + 1)) + "-" + (from.getDate()<=9?('0'+from.getDate()) : from.getDate());
from.setDate(from.getDate() + 1);
} else {
to.setDate(to.getDate() - 1);
str = str + year +"-"+ ((to.getMonth() + 1)<=9?('0'+(to.getMonth() + 1)):(to.getMonth() + 1)) + "-" + (to.getDate()<=9?('0'+to.getDate()) : to.getDate());
}
console.log(str)
i++;
}
}
getWeeks(2017)
