javascript获取当前日期所属第几周函数，具体代码如下：
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//获取当前日期在当前年第几周函数封装，例如2013-08-15 是当前年的第32周
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function theWeek() {
var totalDays = 0;
now = new Date();
years = now.getYear()
if (years < 1000)
years += 1900
var days = new Array(12);
days[0] = 31;
days[2] = 31;
days[3] = 30;
days[4] = 31;
days[5] = 30;
days[6] = 31;
days[7] = 31;
days[8] = 30;
days[9] = 31;
days[10] = 30;
days[11] = 31;
//判断是否为闰年，针对2月的天数进行计算
if (Math.round(now.getYear() / 4) == now.getYear() / 4) {
days[1] = 29
} else {
days[1] = 28
}
if (now.getMonth() == 0) {
totalDays = totalDays + now.getDate();
} else {
var curMonth = now.getMonth();
for (var count = 1; count <= curMonth; count++) {
totalDays = totalDays + days[count - 1];
}
totalDays = totalDays + now.getDate();
}
//得到第几周
var week = Math.round(totalDays / 7);
return week;
}
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