Nodejs Date Format pattern(fmt)

Method Source Code

Date.prototype.pattern=function(fmt) {
    var o = {/* w w  w  .ja  v a2  s.co  m*/
        "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()

   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;
   

2. 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;
   ...
   

3. 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
   

4. 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;
   ...
   

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 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),
   ...
   

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. 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. shortFormat()

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