Formats the difference between two dates - Node.js Date

Node.js examples for Date:Date Calculation

  1. HOME
  2. Node.js
  3. Date
  4. Date Calculation

Description

Formats the difference between two dates

Demo Code

Date.timeSince = function ( d0, d1 ) {
  d1 = d1 || (new Date);//  w  w w.j  ava 2s.  com

  var ms = d1 - d0,
    delay;

  var delays = [
    {
      delta : 3.1536e+10,
      suffix : 'year'
    },
    {
      delta : 2.592e+9,
      suffix : 'month'
    },
    {
      delta : 8.64e+7,
      suffix : 'day'
    },
    {
      delta : 3.6e+6,
      suffix : 'hour'
    },
    {
      delta : 6e+4,
      suffix : 'minute'
    },
    {
      delta : 1000,
      suffix : 'second'
    }
    //anything else is ms
  ];

  while ( delays.length ) {
    delay = delays.shift()

    if ( ms >= delay.delta ) {
      return format( ms / delay.delta, delay.suffix );
    }
  }
  return format( ms, 'millisecond' );

  function format ( interval, suffix ) {
    interval = Math.floor( interval );
    suffix += interval === 1 ? '' : 's';

    return interval + ' ' + suffix;
  }
};

Related Tutorials