dateTemplate.js

// README and npm module https://www.npmjs.com/package/date-template
/**
*@function
*@name dateTemplate
*@param {string} format - ~Y~ ~M~ ~Dw~ ~D~ ~h~ ~m~ ~s~ ~mm~
*@param {number} oldDate - milliseconds time OR Date object
*@param {function} middleware - Change the date type
*/
const dateTemplate = function( format, oldDate, middleware ){ 
  let date = oldDate ? new Date(oldDate) : new Date();
  let tmp = {
    "~Y~": date.getFullYear(),   //Year ****
    "~M~": date.getMonth() + 1,  //Month, from 01 to 12
    "~D~": date.getDate(),       //Day, from 01 to 31
    "~Dw~": date.getDay(),       //Day of the week 0-sunday, 6-saturday
    "~h~": date.getHours(),      //hourse
    "~m~": date.getMinutes(),    //minutes
    "~s~": date.getSeconds(),    //seconds
    "~mm~": date.getMilliseconds //milliseconds
  };
  tmp = middleware ? middleware(tmp) : tmp
  Object.keys(tmp).forEach( key => {
    if( String(tmp[key]).length == 1 )
      tmp[key] = 0 + String(tmp[key])
    format = format.replace( key, tmp[key] )
  })
  return format
};

example.js

var dateTemplate = require('date-template') || dateTemplate

/*
*one parameter
*/
console.log( dateTemplate('~h~:~m~:~s~') )
// "22:20:31"

console.log( dateTemplate('~h~/~m~/~s~') )
// "22/20/31"

console.log( dateTemplate('hourse:~h~ minutes:~m~ seconds:~s~') )
// "hourse:22 minutes:20 seconds:31"

console.log( dateTemplate('~h~:WOW:~m~') )
// "22:WOW:20"

/*
*two parameter
*/
var oldDate = new Date()
oldDate.setHours(-3)

console.log( dateTemplate('~h~:~m~:~s~', oldDate) )
// "19:20:31"

var milliseconds = +new Date()
// 1497382646504

console.log( dateTemplate('~h~:~m~:~s~', milliseconds) )
// "22:39:03"

/*
*three parameter
*/
var middleware = (date) => {
  var mounth = [
    'January',
    'February',
    'March',
    'April',
    'May',
    'June',
    'July',
    'August',
    'September',
    'October',
    'November',
    'December'
  ]
  date['~M~'] = mounth[ date['~M~']-1 ]
  return date
}

console.log( dateTemplate('Today is ~M~ ~D~, ~Y~', false, middleware) )
// "Today is June 13, 2017"

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dateTemplate('~h~:~m~') // 04:44
dateTemplate('hourse:~h~ minutes:~m~') // hourse:04 minutes:44

description https://www.npmjs.com/package/date-template

/**
 * Example of JSDoc comment
 * @param {string} name This is description of the parameter
 * @param {number} age This is second parameter
 * @return {boolean} This is return value
 * @example
 * // This is example of usage
 * const isAllowed = checkAllow('Sova', 23)
 */
function checkAllow(name, age) {
  if (name[0] === 'S' && age >= 18) return true
  return false
}