javascript实现的日期选择插件

文件一：selectDate.js

Code:

var DS_x,DS_y;

function dateSelector() {

var myDate=new Date();

this.year=myDate.getFullYear();

this.month=myDate.getMonth()+1;

this.date=myDate.getDate();

this.inputName='time';

this.display=display;

}

function display()

{

var week=new Array('日','一','二','三','四','五','六');

document.write("<style type=text/css>");

document.write(" .ds_font td,span { font: normal 12px 宋体; color: #000000; }");

document.write(" .ds_border { border: 1px solid #000000; cursor: hand; background-color: #DDDDDD }");

document.write(" .ds_border2 { border: 1px solid #000000; cursor: hand; background-color: #DDDDDD }");

document.write("</style>");

var dateStr="<input style='text-align:center; background-color: #ffeeee;' id='DS_"+this.inputName+"' name='this.inputName' value='"+this.year+"-";

if((""+this.month).length==1){

dateStr+="0"+this.month;

}else{

dateStr+=this.month;

}

dateStr+="-";

if((""+this.date).length==1){

dateStr+="0"+this.date;

}else{

dateStr+=this.date;

}

dateStr+="' size='12' onblur='this.readOnly=true' readonly>";

document.write(dateStr);

document.write("<button type=button style='color:blue;' onclick=this.nextSibling.style.display='block' onfocus=this.blur()>选择日期</button>");

document.write("<div style='position:absolute;display:none;text-align:center;width:0px;height:0px;overflow:visible' onselectstart='return false;'>");

document.write(" <div style='position:absolute;left:-60px;top:20px;width:142px;height:165px;background-color:#F6F6F6;border:1px solid #245B7D;' class=ds_font>");

document.write(" <table cellpadding=0 cellspacing=1 width=140 height=20 bgcolor=#CEDAE7 onmousedown='DS_x=event.x-parentNode.style.pixelLeft;DS_y=event.y-parentNode.style.pixelTop;setCapture();' onmouseup='releaseCapture();' onmousemove='dsMove(this.parentNode)' style='cursor:move;'>");

document.write(" <tr align=center>");

document.write(" <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=subYear(this) title='减小年份'><<</td>");

document.write(" <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=subMonth(this) title='减小月份'><</td>");

document.write(" <td width=52%><b>"+this.year+"</b><b>年</b><b>"+this.month+"</b><b>月</b></td>");

document.write(" <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=addMonth(this) title='增加月份'>></td>");

document.write(" <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=addYear(this) title='增加年份'>>></td>");

document.write(" </tr>");

document.write(" </table>");

document.write(" <table cellpadding=0 cellspacing=0 width=140 height=20 onmousedown='DS_x=event.x-parentNode.style.pixelLeft;DS_y=event.y-parentNode.style.pixelTop;setCapture();' onmouseup='releaseCapture();' onmousemove='dsMove(this.parentNode)' style='cursor:move;'>");

document.write(" <tr align=center>");

for(i=0;i<7;i=i+1)

document.write(" <td>"+week[i]+"</td>");

document.write(" </tr>");

document.write(" </table>");

document.write(" <table cellpadding=0 cellspacing=2 width=140 bgcolor=#EEEEEE>");

for(i=0;i<6;i=i+1)

{

document.write(" <tr align=center>");

for(j=0;j<7;j=j+1)

document.write(" <td width=10% height=16 onmouseover=if(this.innerText!=''&&this.className!='ds_border2')this.className='ds_border' onmouseout=if(this.className!='ds_border2')this.className='' onclick=getValue(this,document.all('DS_"+this.inputName+"'))></td>");

document.write(" </tr>");

}

document.write(" </table>");

document.write(" <span style=cursor:hand onclick=this.parentNode.parentNode.style.display='none'>【关闭】</span>");

document.write(" </div>");

document.write("</div>");

dateShow(document.all("DS_"+this.inputName).nextSibling.nextSibling.childNodes[0].childNodes[2],this.year,this.month)

}

function subYear(obj) //减小年份

{

var myObj=obj.parentNode.parentNode.parentNode.cells[2].childNodes;

myObj[0].innerHTML=eval(myObj[0].innerHTML)-1;

dateShow(obj.parentNode.parentNode.parentNode.nextSibling.nextSibling,eval(myObj[0].innerHTML),eval(myObj[2].innerHTML))

}

function addYear(obj) //增加年份

{

var myObj=obj.parentNode.parentNode.parentNode.cells[2].childNodes;

myObj[0].innerHTML=eval(myObj[0].innerHTML)+1;

dateShow(obj.parentNode.parentNode.parentNode.nextSibling.nextSibling,eval(myObj[0].innerHTML),eval(myObj[2].innerHTML))

}

function subMonth(obj) //减小月份

{

var myObj=obj.parentNode.parentNode.parentNode.cells[2].childNodes;

var month=eval(myObj[2].innerHTML)-1;

if(month==0)

{

month=12;

subYear(obj);

}

if(month<10){

}

myObj[2].innerHTML=month;

dateShow(obj.parentNode.parentNode.parentNode.nextSibling.nextSibling,eval(myObj[0].innerHTML),eval(myObj[2].innerHTML))

}

function addMonth(obj) //增加月份

{

var myObj=obj.parentNode.parentNode.parentNode.cells[2].childNodes;

var month=eval(myObj[2].innerHTML)+1;

if(month==13)

{

month=1;

addYear(obj);

}

myObj[2].innerHTML=month;

dateShow(obj.parentNode.parentNode.parentNode.nextSibling.nextSibling,eval(myObj[0].innerHTML),eval(myObj[2].innerHTML))

}

function dateShow(obj,year,month) //显示各月份的日

{

var myDate=new Date(year,month-1,1);

var today=new Date();

var day=myDate.getDay();

var selectDate=obj.parentNode.parentNode.previousSibling.previousSibling.value.split('-');

var length;

switch(month)

{

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12: length=31; break;

case 4:

case 6:

case 9:

case 11: length=30; break;

case 2:

if((year%4==0)&&(year%100!=0)||(year%400==0))

length=29;

else

length=28;

}

for(i=0;i<obj.cells.length;i++)

{

obj.cells[i].innerHTML='';

obj.cells[i].style.color='';

obj.cells[i].className='';

}

for(i=0;i<length;i++)

{

obj.cells[i+day].innerHTML=(i+1);

if(year==today.getFullYear()&&(month-1)==today.getMonth()&&(i+1)==today.getDate())

obj.cells[i+day].style.color='red';

if(year==eval(selectDate[0])&&month==eval(selectDate[1])&&(i+1)==eval(selectDate[2]))

obj.cells[i+day].className='ds_border2';

}

}

function getValue(obj,inputObj) //把选择的日期传给输入框

{

var myObj=inputObj.nextSibling.nextSibling.childNodes[0].childNodes[0].cells[2].childNodes;

if(obj.innerHTML){

var month1=myObj[2].innerHTML;

var date1=obj.innerHTML;

if(month1<10)

{

month1="0"+month1;

}

if(date1<10){

date1="0"+date1;

}

inputObj.value=myObj[0].innerHTML+"-"+month1+"-"+date1;

}

inputObj.nextSibling.nextSibling.style.display='none';

for(i=0;i<obj.parentNode.parentNode.parentNode.cells.length;i++)

obj.parentNode.parentNode.parentNode.cells[i].className='';

obj.className='ds_border2'

}

function dsMove(obj) //实现层的拖移

{

if(event.button==1)

{

var X=obj.clientLeft;

var Y=obj.clientTop;

obj.style.pixelLeft=X+(event.x-DS_x);

obj.style.pixelTop=Y+(event.y-DS_y);

}

}

var myDate=new dateSelector();

myDate.year;

myDate.inputName='time';

myDate.display();

文件二：简单测试一下test.htm

Code:

<html>

<head>

<title>知识库</title>

</head>

<body bgcolor="">

<table>

<tr align="center">

<td height="22" >发布时间：</td>

<td height="22" align="center" >

<script language="javascript" src="script.js"></script>

</td>

</tr>

</table>

<input type="button" value="an" onclick="alert(document.getElementById('DS_time').value);">

</body>

</html>