jsCalender控件使用详解
最近一直在赶项目。项目现在终于处于稳定的状态，只是修修改改。作为后台程序员的我真是苦逼啊，从web到手机端接口我都得写，杂七杂八的事情。。。这两天终于闲下来了，没事儿看了一下关于js日期的一些函数，突然想到了日历控件，于是试着写了一个，作为后台程序员的我水平有限，大家抱着学习的态度看看我写的这个例子吧。。。
首先一个常用的日期函数：Date(year,month,day)
var date=new Date();
获取年份
var year=this.date.getFullYear();
获取月份，这里是月索引所以要+1
获取当天是几号 获取当天是周几，返回0.周日 1.周一 2.周二 3.周三 4.周四 5.周五 6.周六 获取当月一号是周几 获取当月的天数 好了，我们用到的参数就这么多，后面其实就是关于日期对应周几的一些操作和判断，动态的拼接标签，下面就直接把我写的例子发出来： 代码重新做了改动，将视图的table换为了div,是为了解决IE的tableinnerHTML的只读问题。另外加了options是为了可配置性。 上面代码有简单说明，功能是最基础的，如果更深入的做可以进行扩展
var month=this.date.getMonth()+1;
var day=this.date.getDate();
var week=this.date.getDay();
vargetWeekDay=function(year,month,day){
var date=newDate(year,month,day);
return date.getDay();
}
var weekstart= getWeekDay(this.year,this.month-1,1)
var getMonthDays=function(year,month){
var date=newDate(year,month,0);
return date.getDate();
}
var monthdays=this.getMonthDays(this.year,this.month);
<html>
<meta http-equiv="content-type"content="text/html;charset=utf-8">
<head>
<styletype="text/css">
td{text-align:center;}
</style>
<scripttype="text/javascript">
window.onload=function(){
var Calender=function(){
this.Init.apply(this,arguments);
}
Calender.prototype={
Init:function(container,options){
this.date=new Date();
this.year=this.date.getFullYear();
this.month=this.date.getMonth()+1;
this.day=this.date.getDate();
this.week=this.date.getDay();
this.weekstart=this.getWeekDay(this.year,this.month-1,1);
this.monthdays=this.getMonthDays(this.year,this.month);
this.containerDiv=document.getElementById(container);
this.options=options!=null?options:{
border:"1px solidgreen",
width:"400px",
height:"200px",
backgroundColor:"lightgrey",
fontColor:"blue"
}
},
getMonthDays:function(year,month){
var date=newDate(year,month,0);
return date.getDate();
},
getWeekDay:function(year,month,day){
var date=newDate(year,month,day);
return date.getDay();
},
View:function(){
var tablestr="<table>";
tablestr+="<tr><tdcolspan="3"></td><td>年:"+this.year+"</td><tdcolspan="3">月："+this.month+"</td></tr>";
tablestr+="<tr><tdwidth="14%">日</td><tdwidth="14%">一</td><tdwidth="14%">二</td><tdwidth="14%">三</td><tdwidth="14%">四</td><tdwidth="14%">五</td><tdwidth="14%">六</td></tr>";
var index=1;
//判断每月的第一天在哪个位置
var style="";
if(this.weekstart<7)
{
tablestr+="<tr>";
for(vari=0;i<this.weekstart;i++){
tablestr+="<td></td>";
};
for(vari=0;i<7-this.weekstart;i++){
style=this.day==(i+1)?"background-Color:green;":"";
index++;
tablestr+="<tdstyle=""+style+""val="+(this.year+"-"+this.month+"-"+(i+1))+">"+(i+1)+"</td>";
};
tablestr+="</tr>";
}
///剩余天数对应的位置
//判断整数行并且对应相应的位置
var remaindays=this.monthdays-(7-this.weekstart);
var row=Math.floor(remaindays%7==0?remaindays/7:((remaindays/7)+1)) ;
var count=Math.floor(remaindays/7);
for(vari=0;i<count;i++){
tablestr+="<tr>";
for(vark=0;k<7;k++){
style=this.day==(index+k)?"background-Color:green;":"";
tablestr+="<tdstyle=""+style+""val="+(this.year+"-"+this.month+"-"+(index+k))+">";
tablestr+=index+k;
tablestr+="</td>";
};
tablestr+="</tr>";
index+=7;
};
//最后剩余的天数对应的位置(不能填充一周的那几天)
var remaincols=this.monthdays-(index-1);
tablestr+="<tr>";
for(vari=0;i<remaincols;i++){
style=this.day==index?"background-Color:green;":"";
tablestr+="<tdstyle=""+style+""val="+(this.year+"-"+this.month+"-"+(index))+">";
tablestr+=index;
tablestr+="</td>";
index++;
};
tablestr+="</tr>";
tablestr+="</table>";
return tablestr;
},
Render:function(){
var calenderDiv=document.createElement("div");
calenderDiv.style.border=this.options.border;
calenderDiv.style.width=this.options.width;
calenderDiv.style.height=this.options.height;
calenderDiv.style.cursor="pointer";
calenderDiv.style.backgroundColor=this.options.backgroundColor;
//calenderDiv.style.color=this.options.fontColor;
calenderDiv.style.color="red";
calenderDiv.onclick=function(e){
var evt=e||window.event;
var target=evt.srcElement||evt.target;
if(target&&target.getAttribute("val"))
{
alert(target.getAttribute("val"));
}
}
var tablestr=this.View();
this.tablestr=tablestr;
calenderDiv.innerHTML=tablestr;
var div=document.createElement("div");
div.style.width="auto";
div.style.height="auto";
div.appendChild(calenderDiv);
///翻页div
var pagerDiv=document.createElement("div");
pagerDiv.style.width="auto";
pagerDiv.style.height="auto";
var that=this;
///重新设置参数
var resetPara=function(year,month,day){
that.date=new Date(year,month,day);
that.year=that.date.getFullYear();
that.month=that.date.getMonth()+1;
that.day=that.date.getDate();
that.week=that.date.getDay();
that.weekstart=that.getWeekDay(that.year,that.month-1,1);
that.monthdays=that.getMonthDays(that.year,that.month);
}
//上一页
var preBtn=document.createElement("input");
preBtn.type="button";
preBtn.value="<";
preBtn.onclick=function(){
that.containerDiv.removeChild(div);
resetPara(that.year,that.month-2,that.day);
that.Render();
}
//下一页
var nextBtn=document.createElement("input");
nextBtn.type="button";
nextBtn.value=">";
nextBtn.onclick=function(){
that.containerDiv.removeChild(div);
resetPara(that.year,that.month,that.day);
that.Render();
}
pagerDiv.appendChild(preBtn);
pagerDiv.appendChild(nextBtn);
div.appendChild(pagerDiv);
var dropDiv=document.createElement("div");
var dropdivstr="";
//选择年份
dropdivstr+="<selectid="ddlYear">";
for(vari=1900;i<=2100;i++){
dropdivstr+=
i==that.year
?"<option value=""+i+""selected="true">"+i+"</option>"
:"<option value=""+i+"">"+i+"</option>";
};
dropdivstr+="</select>";
//选择月份
dropdivstr+="<selectid="ddlMonth">";
for(vari=1;i<=12;i++){
dropdivstr+=
i==that.month
?"<option value=""+i+""selected="true">"+i+"</option>"
:"<option value=""+i+"">"+i+"</option>";
};
dropdivstr+="</select>";
dropDiv.innerHTML=dropdivstr;
div.appendChild(dropDiv);
that.containerDiv.appendChild(div);
///绑定选择年份和月份的事件
var ddlChange=function(){
var ddlYear=document.getElementById("ddlYear");
var ddlMonth=document.getElementById("ddlMonth");
var yearIndex=ddlYear.selectedIndex;
var year=ddlYear.options[yearIndex].value;
var monthIndex=ddlMonth.selectedIndex;
var month=ddlMonth.options[monthIndex].value;
that.containerDiv.removeChild(div);
resetPara(year,month-1,that.day);
that.Render();
}
ddlYear.onchange=function(){
ddlChange();
}
ddlMonth.onchange=function(){
ddlChange();
}
}
}
var calender=new Calender("dvTest",{
border:"1px solidgreen",
width:"400px",
height:"200px",
backgroundColor:""
}
);
calender.Render();
}
</script>
</head>
<body>
<divid="dvTest"></div>
</body>
</html>
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