时间(年月日)总结 计算两个时间的时间差（天、小时、分钟、秒数）

1、获取当前时间

function getnowDate(type) {
    var date = new Date();
    var seperator1 = "-";
    var year = date.getFullYear();
    var month = date.getMonth() + 1;
    var strDate = date.getDate();
    var hour = date.getHours();
    var minutes = date.getMinutes();
    var seconds = date.getSeconds();
    if (month >= 1 && month <= 9) {
      month = "0" + month;
    }
    if (strDate >= 0 && strDate <= 9) {
      strDate = "0" + strDate;
    }
    if (hour >= 0 && hour <= 9) {
      hour = "0" + hour;
    }
    if (minutes >= 0 && minutes <= 9) {
      minutes = "0" + minutes;
    }
    if (seconds >= 0 && seconds <= 9) {
      seconds = "0" + seconds;
    }
    var currentdate = '';
    if (type == 'year') { //年
        currentdate = year;
    } else if (type == 'day') { //年月日
        currentdate = year + seperator1 + month + seperator1 + strDate;
    } else if (type == 'seconds') { //年月日 时分秒
        currentdate = year + seperator1 + month + seperator1 + strDate + " " + hour + ":" + minutes + ":" + seconds;
    }else if(type=="年"){
        currentdate = year + '年' + month + '月' + strDate + '日' + " " + hour + ":" + minutes + ":" + seconds;    
    }
    return currentdate;
}

 

2、计算两个时间相差（天、小时、分钟、秒数）的函数

function GetDateDiff(startTime,endTime,diffType){
      startTime=startTime.replace(/\-/g,"/");
      endTime=endTime.replace(/\-/g,"/");
      diffType=diffType.toLowerCase();
      var sTime = new Date(startTime);    //开始时间
      var eTime = new Date(endTime);  //结束时间</font>
      //作为除数的数字
      var divNum = 1;
      switch (diffType){
        case "second":
          divNum=1000;
          break;
        case "minute":
          divNum=1000*60;
            break;
        case "hour":
          divNum=1000*3600;
          break;
        case "day":
          divNum=1000*3600*24;
          break;
        default:
          break;
      }
      return parseInt((eTime.getTime()-sTime.getTime())/parseInt(divNum));
}

  调用函数 计算相差天数

var ti = GetDateDiff('2019-10-09 19:00:00','2019-12-12 14:33:30','day');  //获取两个时间相差天数

 3、几天前

function getDateDiff(hours){
    var minute = 1000 * 60;
    var hour = minute * 60;
    var day = hour * 24;
    var halfamonth = day * 15;
    var month = day * 30;
    var now = new Date().getTime();
    var diffValue = now - hours;
    if(diffValue < 0){return;}
    var monthC =diffValue/month;
    var weekC =diffValue/(7*day);
    var dayC =diffValue/day;
    var hourC =diffValue/hour;
    var minC =diffValue/minute;
    if(monthC>=1){
        result="" + parseInt(monthC) + "月前";
    }
    else if(weekC>=1){
        result="" + parseInt(weekC) + "周前";
    }
    else if(dayC>=1){
        result=""+ parseInt(dayC) +"天前";
    }
    else if(hourC>=1){
        result=""+ parseInt(hourC) +"小时前";
    }
    else if(minC>=1){
        result=""+ parseInt(minC) +"分钟前";
    }else {
        result="刚刚";
    }
    return result;
}

4、时间戳转化为年月日

//将long时间格式转化为年月日标准格式
function dateFormatUtil(longTypeDate){
    var dateTypeDate = "";
    var date = new Date();
    date.setTime(longTypeDate);
    dateTypeDate = date.getFullYear()+"年"+ getMonths(date)+"月"+getDays(date)+"日";
    return dateTypeDate;
}

//返回 01-12 的月份值
function getMonths(date){
    var month = "";
    month = date.getMonth() + 1; //getMonth()得到的月份是0-11
    if(month<10){
        month = "0" + month;
    }
    return month;
}

//返回01-30的日期
function getDays(date){
    var day = "";
    day = date.getDate();
    if(day<10){
        day = "0" + day;
    }
    return day;
}

5、时间转换格式

function getDateTimeStamp(dateStr){
    return Date.parse(dateStr.replace(/-/gi,"/"));
}

6、秒数转化为时分秒格式

function formatSeconds(value) {
  var theTime = parseInt(value); // 秒
  var middle = 0; // 分
  var hour = 0; // 小时
  if (theTime > 60) {
    middle = parseInt(theTime / 60);
    theTime = parseInt(theTime % 60);
    if (middle > 60) {
      hour = parseInt(middle / 60);
      middle = parseInt(middle % 60);
    }
  }
  var result = "" + parseInt(theTime) + "秒";
  if (middle > 0) {
    result = "" + parseInt(middle) + "分" + result;
  }
  if (hour > 0) {
    result = "" + parseInt(hour) + "小时" + result;
  }
  return result;
}