js 时间戳与yyyy-mm-dd或yyyy-MM-dd HH-mm-ss互相转换

首先是获取当前系统时间转换为时间戳

var timestamp = Date.parse(new Date());//获取当前时间
    timestamp = timestamp / 1000;

然后是时间戳转yyyy-mm-dd

function fmtDate(inputTime){
    var date =  new Date(inputTime);
    var y = 1900+date.getYear();
    var m = "0"+(date.getMonth()+1);
    var d = "0"+date.getDate();
    return y+"-"+m.substring(m.length-2,m.length)+"-"+d.substring(d.length-2,d.length);
}
 
fmtDate(date)

最后是然后是时间戳转yyyy-MM-dd HH-mm-ss

function formatDateTime(inputTime) {
    var date = new Date(inputTime);
    var y = date.getFullYear();
    var m = date.getMonth() + 1;
    m = m < 10 ? ('0' + m) : m;
    var d = date.getDate();
    d = d < 10 ? ('0' + d) : d;
    var h = date.getHours();
    h = h < 10 ? ('0' + h) : h;
    var minute = date.getMinutes();
    var second = date.getSeconds();
    minute = minute < 10 ? ('0' + minute) : minute;
    second = second < 10 ? ('0' + second) : second;
    return y + '-' + m + '-' + d+' '+h+':'+minute+':'+second;
}
 
formatDateTime(inputTime);