js获取当前日期(昨天、今天、明天)

js

//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());