JavaScript Date Object formatted as a string implementation method

  This article is mainly on the JavaScript Date object format into a string implementation of the method is introduced in detail, the need for friends can come to the reference, I hope to help you.

JavaScript provides the date format is too simple, the general application needs to implement the format of the method. Here is a format I came up with, should be able to meet the common needs. You can use any separator in a date template, and you can use text as a separator. It even supports formatting .    principles like YYYYMMDD: Use regular expressions to split date elements [such as YYYY, MM, DD] and delimiters in a date template into an array, and then replace the date element with the actual value to form a date string .    Implementation of a total of two functions, paste can be run .    expansion:    Example only supports the time of the month and the second millisecond of the element, if you need to display the week you can add W = getday () in values, To modify a regular expression to y+| m+|d+| h+|m+|s+| s+|w+| [^ymdhmssw]/g can .    If you need to display the month or week as a full or simple spelling, add the appropriate configuration to the CFG, I only added an example to the CFG     How to use:    var Date = new Date ();  var str = formatdate (date, ' yyyy mmm month dd Day ');  the value of STR is July 29, 2012       code as follows:/**& nbsp * Format integers   * @param number:number integers to be formatted   * @param fmt:string integer format   */  function FormatNumber (number, F MT) {  Number = number + ';  if (Fmt.length > Number.length) {  return fmt.substring (number.length) + N umber; }  return number; }   /**  * format date is a string representation   * @param datetime:date the Date object to format &NB Sp * @param format:string Date format  */  function FormatDate (datetime, format) {  var cfg = {  MMM: [' One ', ' two ', ' three ', ' four ', ' five ', ' six ', ' seven ', ' eight ', ' nine ', ' ten ', ' 11 ', ' 12 '],  MMMM: [' One ', ' two ', ' three ', ' four ', ' five ', ' six ', ' seven ', ' eight ', ' nine ', ' ten ', ' 11 ', ' 12 '] },  values = {   Y:datetime.getfullyear (),  m:datetime.getmonth (),  d:datetime.getdate (),  H:datetime.gethour S (),  m:datetime.getminutes (),  s:datetime.getseconds (),  s:datetime.getmilliseconds ()  };& nbsp /* Split the date format with a regular expression */  var elems = Format.match (/y+| m+|d+| h+|m+|s+| s+| [^ymdhmss]/g); //Replace the date element with the actual value   for (var i = 0; i < elems.length; i++) {  if (Cfg[elems[i]) {  ele Ms[i] = Cfg[elems[i]][values[elems[i].charat (0)]]; } else if (Values[elems[i].charat (0))) {  elems[i] = FormatNumber (Values[elems[i].charat (0)], elems[i].replace (/./g, ' 0 ')); } -}    return Elems.join ('); }