Nodejs Date Format pattern(fmt)

Method Source Code

/**     /*from w  ww . j  a  va2  s  .  com*/
 * eg:     
 * (new Date()).pattern("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423     
 * (new Date()).pattern("yyyy-MM-dd E HH:mm:ss") ==> 2009-03-10 ? 20:09:04     
 * (new Date()).pattern("yyyy-MM-dd EE hh:mm:ss") ==> 2009-03-10 ?? 08:09:04     
 * (new Date()).pattern("yyyy-MM-dd EEE hh:mm:ss") ==> 2009-03-10 ??? 08:09:04     
 * (new Date()).pattern("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18     
 */
Date.prototype.pattern = function (fmt) {
    var set = {
        "M+": this.getMonth() + 1,//??
        "d+": this.getDate(),//?
        "h+": this.getHours() % 12 == 0 ? 12 : this.getHours() % 12,//??
        "H+": this.getHours(),//??
        "m+": this.getMinutes(),//?
        "s+": this.getSeconds(),//?
        "q+": Math.floor((this.getMonth() + 3) / 3),//??
        "S": this.getMilliseconds()//??
    };
    var week = {
        "0": "/u65e5",
        "1": "/u4e00",
        "2": "/u4e8c",
        "3": "/u4e09",
        "4": "/u56db",
        "5": "/u4e94",
        "6": "/u516d"
    };
    if (/(y+)/.test(fmt)) {
        fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
    if (/(E+)/.test(fmt)) {
        fmt = fmt.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "/u661f/u671f" : "/u5468") : "") + week[this.getDay() + ""]);
    }
    for (var k in o) {
        if (new RegExp("(" + k + ")").test(fmt)) {
            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
        }
    }
    return fmt;
}

Related

1. formattedDate(delemeter)

   Date.prototype.formattedDate = function (delemeter) {
     var dm = delemeter;
     if (!dm) dm = '';
     var yyyy = this.getFullYear().toString();
     var mm = (this.getMonth() + 1).toString();
     var dd = this.getDate().toString();
     if (mm < 10) mm = "0" + mm;
     if (dd < 10) dd = "0" + dd;
     return "" + yyyy + dm + mm + dm + dd;
   ...
   

2. formattedTime()

   Date.prototype.formattedTime = function(){
     var hours   = (this.getHours() < 10 ? "0" : "")   + this.getHours();
     var minutes = (this.getMinutes() < 10 ? "0" : "") + this.getMinutes();
     var seconds = (this.getSeconds() < 10 ? "0" : "") + this.getSeconds();
     return hours + ':' + minutes + ':' + seconds
   

3. fromISO(s)

   Date.prototype.fromISO= function(s){
     var day, tz, rx=  /^(\d{4}\-\d\d\-\d\d([tT][\d:\.]*)?)([zZ]|([+\-])(\d\d):(\d\d))?$/, p= rx.exec(s) || [];
     if(p[1]){
       day= p[1].split(/\D/).map(function(itm){
         return parseInt(itm, 10) || 0;
       });
       day[1]-= 1;
       day= new Date(Date.UTC.apply(Date, day));
       if(!day.getDate()) return NaN;
   ...
   

4. pattern(fmt)

   Date.prototype.pattern=function(fmt) {      
       var o = {      
       "M+" : this.getMonth()+1, 
       "d+" : this.getDate(), 
       "h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, 
       "H+" : this.getHours(), 
       "m+" : this.getMinutes(), 
       "s+" : this.getSeconds(), 
       "q+" : Math.floor((this.getMonth()+3)/3), 
   ...
   

5. pattern(fmt)

   Date.prototype.pattern=function(fmt) {
       var o = {
           "M+" : this.getMonth()+1, 
           "d+" : this.getDate(), 
           "h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, 
           "H+" : this.getHours(), 
           "m+" : this.getMinutes(), 
           "s+" : this.getSeconds(), 
           "q+" : Math.floor((this.getMonth()+3)/3), 
   ...
   

6. pattern(fmt)

   Date.prototype.pattern=function(fmt) {        
       var o = {        
       "M+" : this.getMonth()+1, 
       "d+" : this.getDate(), 
       "h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, 
       "H+" : this.getHours(), 
       "m+" : this.getMinutes(), 
       "s+" : this.getSeconds(), 
       "q+" : Math.floor((this.getMonth()+3)/3), 
   ...
   

7. pattern(fmt)

   Date.prototype.pattern=function(fmt) {         
       var o = {         
       "M+" : this.getMonth()+1, 
       "d+" : this.getDate(), 
       "h+" : this.getHours()%12 == 0 ? 12 : this.getHours()%12, 
       "H+" : this.getHours(), 
       "m+" : this.getMinutes(), 
       "s+" : this.getSeconds(), 
       "q+" : Math.floor((this.getMonth()+3)/3), 
   ...
   

8. shortFormat()

   Date.prototype.shortFormat = function() {
     return (this.getMonth() + 1) + "/" + this.getDate() + "/" + this.getFullYear();
   };
   

9. shortFormat()

   Date.prototype.shortFormat = function() {
     return (this.getMonth() + 1) + "/" + this.getDate() + "/" + this.getFullYear();