Countdown plug-in code based on jQuery_jquery

1 /*
* Countdown plug-in, mainly used for limited time purchases
* By wayshan version 1.0
* Usage:
* $(function(){
* $("#ElementId") .countdown({
* Edate:"2012-12-21 15:14:23"
* });
* })

*/
;(function( $){
$.fn.countdown = function(options){
if (this.length == 0){
return false;
}
return this.each(function( ){
var Default = {
Sdate:null,//The start time (in the format of "2010-10-10 10:10:10") can be set to the server time
Edate:null,/ /End date (format is "2010-10-10 10:10:10")
callback:function(){
return false;
}
},
_H_Text='hour ',
_M_Text='minutes',
_S_Text='seconds',
_lT = null,
_cT = new Date(),
_eT = null,
_elT = null ,
ctime = null,
etime = null,
DomId = null,
_timeout = null,
_gt = function(){
if (_lT == null) {
_elT = (etime - ctime);
if (_elT < 0){
$('#' DomId).html("0" _H_Text ":< strong>0"
_M_Text ":0" _S_Text);
}
var _xT =Math.ceil(_elT/(24*60*60* 1000));
_cT = parseInt(_cT.match(/s(d )D/)[1] * 3600)
parseInt(_cT.split(":")[1] * 60) parseInt( _cT.split(":")[2]);
_eT = _xT * 24 * 3600 parseInt(_eT.match(/s(d )D/)[1] * 3600)
parseInt(_eT. split(":")[1] * 60) parseInt(_eT.split(":")[2]);
_lT = _elT/1000;
}
if (_elT > 0) {
if (_lT >= 0) {
var _H = Math.floor(_lT / 3600);
var _M = Math.floor((_lT - _H * 3600) / 60);
var _S = (_lT - _H * 3600) % 60;
$('#' DomId).html("" _H "" _H_Text ":"
_M "" _M_Text ":" _S "" _S_Text);
_lT--;
} else {
clearInterval(_timeout) ;
if(s.callback && $.isFunction(s.callback)){
s.callback.call(this);
}
}
} else {
clearInterval (_timeout);
if(s.callback && $.isFunction(s.callback)){
s.callback.call(this);
}
}
},
strDateTime = function(str){
//To determine whether the date and time input is correct, the type must be in the form: 2011-01-01 01:01:01
var reg = /^(d{1, 4})(-|/)(d{1,2})2(d{1,2}) (d{1,2}):(d{1,2}):(d{1,2} )$/;
var r = str.match(reg);
if(r==null)return false;
var d= new Date(r[1], r[3]-1 ,r[4],r[5],r[6],r[7]);
return (d.getFullYear()==r[1]&&(d.getMonth() 1)==r [3]&&d.getDate()==r[4]
&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7] );
}
var s = $.extend({}, Default, options || {});
DomId = this.id;
if (DomId == 'null'){
return;
}
_eT = s.Edate;
if (!strDateTime(_eT)){
alert('The end date format is incorrect');
return false;
}
if (s.Sdate != null){
_cT = s.Sdate;
}
_cT = _cT.toString();
cdate = _cT.replace( /-/g, '/');
_eT = _eT.toString();
edate = _eT.replace(/-/g, '/');
ctime = new Date(cdate) ;
etime = new Date(edate);
_timeout = setInterval(_gt, 1000)
});
}
})(jQuery);