js根据日期获取本周的开始日期和结束日期

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//根据日期获取本周的开始日期和结束日期var weekArray = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");var getDays = function() {    var now = new Date;    var day = now.getDay();    var week = "7123456";    var first = 0 - week.indexOf(day);    var f = new Date;    f.setDate(f.getDate() + first);    var last = 6 - week.indexOf(day);    var l = new Date;    l.setDate(l.getDate() + last);    var a = [        f, l    ];    var formatD = formatDate(a[0]);    var formatendD = formatDate(a[1]);    var EndDate = [formatD, new Date(formatD).getDay(), weekArray[new Date(formatD).getDay()], formatendD, new Date(formatendD).getDay(), weekArray[new Date(formatendD).getDay()]];    return EndDate;}function formatTen(num) {    return num > 9 ? (num + "") : ("0" + num);}function formatDate(date) {    var year = date.getFullYear();    var month = date.getMonth() + 1;    var day = date.getDate();    var hour = date.getHours();    var minute = date.getMinutes();    var second = date.getSeconds();    return year + "-" + formatTen(month) + "-" + formatTen(day);}

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