Js Date function date formatting extension, js Date function date

Js Date function date formatting extension, js Date function date

Prototype is to add attributes and methods to an object and return references to the object type prototype. For example, to extend the Date function in js:

Date. prototype. Format = function (fmt ){
Var o = {
"M +": this. getMonth () + 1, // month
"D +": this. getDate (), // day
"H +": this. getHours (), // hour
"M +": this. getMinutes (), // minute
"S +": this. getSeconds (), // second
"Q +": Math. floor (this. getMonth () + 3)/3), // quarter
"S": this. getMilliseconds () // millisecond
};
If (/(y + )/. test (fmt) fmt = fmt. replace (RegExp. $1, (this. getFullYear () + ""). substr (4-RegExp. $1. length ));
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;
}

Call: var timeread = new Date (). Format ("MM-dd hh: mm ");