JS根据传入日期算出当前周一到周日的日期数组

var utiljs = {};utiljs.weekComputedfn = {    dates: [],    formatDate: function (date) {        var year = date.getFullYear() + '/';        var month = (date.getMonth() + 1) + '/';        var day = date.getDate();        return year + month + day;    },    addDate: function (date, n) {        date.setDate(date.getDate() + n);        return date;    },    setDate: function (date) {        dates = [];        var week = date.getDay() - 1;        date = this.addDate(date, week * -1);        currentFirstDate = new Date(date);        for (var i = 0; i < 7; i++) {            dates.push(this.formatDate(i == 0 ? date : this.addDate(date, 1)));        }        return dates;    }}//使用方法utiljs.weekComputedfn.setDate(new Date())