基于jQuery下拉日期插件

/**
* jQuery.selectDate
* jQuery 下拉列表选择日期插件
* @author<a target=_blank href="http://my.csdn.net/" class="user_name" style="list-style: none; word-break: break-all; word-wrap: break-word; margin: 0px 1em 0px 0px; padding: 0px; font-stretch: normal;">瑾色年華</a>
*
*/
(function($){
"use strict";
var defaultOptions = {
begin: 1960,
end: new Date().getFullYear()
};
var selectDate = function(self, option){
var $self  = this;
$self.opt = $.extend({}, defaultOptions, option);
$self.elem = self;
$self.init();
};
selectDate.prototype = {
init: function(){
var $self = this
, opt = $self.opt
, elem = $self.elem;
var year=$(elem[0]),month=$(elem[1]),day=$(elem[2]);
for(var i=opt.end;i>=opt.begin;i--){
$self.addChildren(year,i);
}
for(var i=1;i<=12;i++){
$self.addChildren(month,i<10?"0"+i:i);
}
$(".overview.date:lt(2)").on("click",function(){
var year=parseInt($(".overview.date").eq(0).find("li.selected a").text());
var month=parseInt($(".overview.date").eq(1).find("li.selected a").text());
$(".overview.date").eq(2).empty();
if(year&&month){
for(var i=1;i<=new Date(year,month,0).getDate();i++){
var children=$("<li><a>"+(i<10?"0"+i:i)+"</a></li>")
$(".overview.date").eq(2).append(children);
}
}
})
},addChildren:function(parent,text){
var children=$("<li><a>"+text+"</a></li>");
return parent.append(children);
}

}

function plugin(option) {
new selectDate(this,option);
return this;
}

$.fn.selectDate= plugin;
$.fn.selectDate.Constructor = selectDate;
})(jQuery)