RN-昨天、今天、明天

    GetDateStr(AddDayCount) {
        const dd = new Date();
        dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期 
        const y = dd.getFullYear();
        const m = dd.getMonth()+1;//获取当前月份的日期 
        const d = dd.getDate();
        console.log(y+"-"+m+"-"+d);
        return y+"-"+m+"-"+d;
    }

this.GetDateStr(-1);
this.GetDateStr(0);
this.GetDateStr(1);

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