javascript獲取當(dāng)前日期所屬第幾周函數(shù)

    javascript獲取當(dāng)前日期所屬第幾周函數(shù)，具體代碼如下：
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    //獲取當(dāng)前日期在當(dāng)前年第幾周函數(shù)封裝，例如2013-08-15 是當(dāng)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;
    //判斷是否為閏年，針對(duì)2月的天數(shù)進(jìn)行計(jì)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();
    }
    //得到第幾周
    var week = Math.round(totalDays / 7);
    return week;
    }