获取本周，上周，下周的起始和结束时间
/*** 获取本周，上周，下周的起始和结束时间
* @param {string} type "s"代表开始,"e"代表结束
* @param {int} dates不传或0代表本周，-1代表上周，1代表下周
*@returns {string}返回yyyy-mm-dd格式字符串
*/
getDateOfWeek: function (type, dates) {
var now = new Date();
var nowTime = now.getTime();
var day = now.getDay();
var longTime = 24 * 60 * 60 * 1000;
var n = longTime * 7 * (dates || 0);
if (type == "s") {
var dd = nowTime - (day - 1) * longTime + n;
};
if (type == "e") {
var dd = nowTime + (7 - day) * longTime + n;
};
dd = new Date(dd);
return this.formatDateOrToday(dd);
},
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