JavaScript implements date and time difference judgment

This article mainly introduces you to the method of judging the date and time difference in js. The article also introduces the code of js to find the time difference. Friends who need it can refer to it. I hope it can help you.

The code for js to determine date and time is as follows:

alert(GetDateDiff("2018-02-27 19:20:22","2018-02-27 09:20:22","hour"));

function GetDateDiff(startTime, endTime, diffType) {
  //将xxxx-xx-xx的时间格式，转换为 xxxx/xx/xx的格式 
  startTime = startTime.replace(/\-/g, "/");
  endTime = endTime.replace(/\-/g, "/");
  //将计算间隔类性字符转换为小写
  diffType = diffType.toLowerCase();
  var sTime =new Date(startTime); //开始时间
  var eTime =new Date(endTime); //结束时间
  //作为除数的数字
  var timeType =1;
  switch (diffType) {
    case"second":
      timeType =1000;
    break;
    case"minute":
      timeType =1000*60;
    break;
    case"hour":
      timeType =1000*3600;
    break;
    case"day":
      timeType =1000*3600*24;
    break;
    default:
    break;
  }
  return parseInt((eTime.getTime() - sTime.getTime()) / parseInt(timeType));
}

PS: Let’s look at js to find the time difference

var date1=new Date(); //开始时间
alert("aa");
var date2=new Date();  //结束时间
var date3=date2.getTime()-date1.getTime() //时间差的毫秒数
//计算出相差天数
var days=Math.floor(date3/(24*3600*1000))
//计算出小时数
var leave1=date3%(24*3600*1000)  //计算天数后剩余的毫秒数
var hours=Math.floor(leave1/(3600*1000))
//计算相差分钟数
var leave2=leave1%(3600*1000)    //计算小时数后剩余的毫秒数
var minutes=Math.floor(leave2/(60*1000))
//计算相差秒数
var leave3=leave2%(60*1000)   //计算分钟数后剩余的毫秒数
var seconds=Math.round(leave3/1000)
alert(" 相差 "+days+"天 "+hours+"小时 "+minutes+" 分钟"+seconds+" 秒")

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