笔记：js获取近一周，近一个月，近半个月的时间段

    // 初始化获取日期
    var myDate = new Date();
    var year = myDate.getFullYear(); //获取完整的年份(4位,1970-????)
    var month = myDate.getMonth() + 1; //获取当前月份(0-11,0代表1月)
    var day = myDate.getDate(); //获取当前日(1-31)
    // 今天
    this.startTime1 = year + "-" + month + "-" + day;

    // 昨天
    // this.startTime2 = year + "-" + month + "-" + (day - 1);
    var end2 = new Date();
    var start2 = new Date();
    start2.setTime(start2.getTime() - 3600 * 1000 * 24 * 1);
    this.startTimeYes = this.GMTToStr(start2);
    this.endTimeYes = this.GMTToStr(end2);
    // console.log(this.startTimeYes, this.endTimeYes);

    // 近七天
    var end = new Date();
    var start = new Date();
    start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
    this.startTimeWeek = this.GMTToStr(start);
    this.endTimeWeek = this.GMTToStr(end);

    // 近15天
    var end1 = new Date();
    var start1 = new Date();
    start1.setTime(start1.getTime() - 3600 * 1000 * 24 * 15);
    this.startTimeMonth = this.GMTToStr(start1);
    this.endTimeMonth = this.GMTToStr(end1);


GMTToStr(time){
    let date = new Date(time)
    let Str=date.getFullYear() + '-' +
    (date.getMonth() + 1) + '-' + 
    date.getDate() + ' ' + 
    date.getHours() + ':' + 
    date.getMinutes() + ':' + 
    date.getSeconds()
    return Str
}