日期:2014-05-16 浏览次数:20379 次
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>日期联动选择器</title> <script type="text/javascript"> var $ = function (id) { return "string" == typeof id ? document.getElementById(id) : id; }; function addEventHandler(oTarget, sEventType, fnHandler) { if (oTarget.addEventListener) { oTarget.addEventListener(sEventType, fnHandler, false); } else if (oTarget.attachEvent) { oTarget.attachEvent("on" + sEventType, fnHandler); } else { oTarget["on" + sEventType] = fnHandler; } }; var Class = { create: function() { return function() { this.initialize.apply(this, arguments); } } } var Extend = function(destination, source) { for (var property in source) { destination[property] = source[property]; } return destination; } var DateSelector = Class.create(); DateSelector.prototype = { initialize: function(oYear, oMonth, oDay, options) { this.SelYear = $(oYear);//年选择对象 this.SelMonth = $(oMonth);//月选择对象 this.SelDay = $(oDay);//日选择对象 this.SetOptions(options); var dt = new Date(), iMonth = parseInt(this.options.Month), iDay = parseInt(this.options.Day), iMinYear = parseInt(this.options.MinYear), iMaxYear = parseInt(this.options.MaxYear); this.Year = parseInt(this.options.Year) || dt.getFullYear(); this.Month = 1 <= iMonth && iMonth <= 12 ? iMonth : dt.getMonth() + 1; this.Day = iDay > 0 ? iDay : dt.getDate(); this.MinYear = iMinYear && iMinYear < this.Year ? iMinYear : this.Year; this.MaxYear = iMaxYear && iMaxYear > this.Year ? iMaxYear : this.Year; this.onChange = this.options.onChange; //年设置 this.SetSelect(this.SelYear, this.MinYear, this.MaxYear - this.MinYear + 1, this.Year - this.MinYear); //月设置 this.SetSelect(this.SelMonth, 1, 12, this.Month - 1); //日设置 this.SetDay(); var oThis = this; //日期改变事件 addEventHandler(this.SelYear, "change", function(){ oThis.Year = oThis.SelYear.value; oThis.SetDay(); oThis.onChange(); }); addEventHandler(this.SelMonth, "change", function(){ oThis.Month = oThis.SelMonth.value; oThis.SetDay(); oThis.onChange(); }); addEventHandler(this.SelDay, "change", function(){ oThis.Day = oThis.SelDay.value; oThis.onChange(); }); }, //设置默认属性 SetOptions: function(options) { this.options = {//默认值 Year: 0,//年 Month: 0,//月 Day: 0,//日 MinYear: 0,//最小年份 MaxYear: 0,//最大年份 onChange: function(){}//日期改变时执行 }; Extend(this.options, options || {}); }, //日设置 SetDay: function() { //取得月份天数 var daysInMonth = new Date(this.Year, this.Month, 0).getDate(); if (this.Day > daysInMonth) { this.Day = daysInMonth; }; this.SetSelect(this.SelDay, 1, daysInMonth, this.Day - 1); }, //select设置 SetSelect: function(oSelect, iStart, iLength, iIndex) { //添加option oSelect.options.length = iLength; for (var i = 0; i < iLength; i++) { oSelect.options[i].text = oSelect.options[i].value = iStart + i; } //设置选中项 oSelect.selectedIndex = iIndex; } }; </script> </head> <body> <select id="idYear"></select> <select id="idMonth"></select> <select id="idDay"></select> <br /> 你选择的日期:<span id="idShow"></span> <script> var ds = new DateSelector("idYear", "idMonth", "idDay", { MaxYear: new Date().getFullYear() + 2, onChange: function(){ $("idShow").innerHTML = this.Year + "/" + this.Month + "/" + this.Day; } }); ds.onChange(); </script> </body> </html>
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