js to get the current time (including today, tomorrow and yesterday)

//昨天的时间 var day1 = new Date(); day1.setTime(day1.getTime()-24*60*60*1000); var s1 = day1.getFullYear()+"-" + (day1.getMonth()+1) + "-" + day1.getDate(); //今天的时间 var day2 = new Date(); day2.setTime(day2.getTime()); var s2 = day2.getFullYear()+"-" + (day2.getMonth()+1) + "-" + day2.getDate(); //明天的时间 var day3 = new Date(); day3.setTime(day3.getTime()+24*60*60*1000); var s3 = day3.getFullYear()+"-" + (day3.getMonth()+1) + "-" + day3.getDate(); //拼接时间 function show(){ var str = "" + s1 + "至" + s2; return str; } //赋值doubleDate $('#dateS').val(show());