Nodejs Date Format pattern(fmt)

Method Source Code

/**    //from  w ww. j  a va  2  s  . c  o m

 * (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 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), //??      
    "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. formatf(format)

   Date.prototype.format = function f(format) {
       const o = {
           'M+': this.getMonth() + 1,
           'd+': this.getDate(),
           'h+': this.getHours(),
           'm+': this.getMinutes(),
           's+': this.getSeconds(),
           'q+': Math.floor((this.getMonth() + 3) / 3),
           S: this.getMilliseconds(),
   ...
   

2. formattedDate()

   Date.prototype.formattedDate = function(){
     var dd   = (this.getDate() < 10 ? "0" : "") + this.getDate();
     var mm   = (this.getMonth() + 1 < 10 ? "0" : "") + (this.getMonth() + 1);
     var yyyy = this.getFullYear();
     return yyyy + '/' + mm + '/' + dd;
   

3. 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;
   ...
   

4. 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
   

5. 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;
   ...
   

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 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),
   ...
   

8. 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), 
   ...
   

9. 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), 
   ...