talk is cheap,show me the code！

 

//获取昨天            var day1 = new Date();            day1.setTime(day1.getTime()-24*60*60*1000);            var yesterDate = day1.getFullYear()+"/" + (day1.getMonth()+1) + "/" + day1.getDate();

 

//获取当前日期            var date = new Date();            var year = date.getFullYear();            var month = date.getMonth() + 1;            var day = date.getDate();            if (month < 10) {                month = "0" + month;            }            if (day < 10) {                day = "0" + day;            };            var currentdate = year + '-' + month + '-' + day;

 

//获取今年第一天            var date1 = new Date();            var year1 = date.getFullYear();            var firstMonth = year1 + '-' + '01' + '-' + '01';