js选择日期

时间：2021-08-26 08:12:18|栏目：JavaScript代码|点击：次

<P><script language=javascript>var DS_x,DS_y;</P>
<P>function dateSelector()  //构造dateSelector对象，用来实现一个日历形式的日期输入框。{  var myDate=new Date();  this.year=myDate.getYear();  //定义year属性，年份，默认值为当前系统年份。  this.month=myDate.getMonth()+1;  //定义month属性，月份，默认值为当前系统月份。  this.date=myDate.getDate();  //定义date属性，日，默认值为当前系统的日。  this.inputName='';  //定义inputName属性，即输入框的name，默认值为空。注意：在同一页中出现多个日期输入框，不能有重复的name！  this.display=display;  //定义display方法，用来显示日期输入框。}</P>
<P>function display()  //定义dateSelector的display方法，它将实现一个日历形式的日期选择框。{  var week=new Array('日','一','二','三','四','五','六');</P>
<P>  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>");</P>
<P>  document.write("<input style='text-align:center;' id='DS_"+this.inputName+"' name='"+this.inputName+"' value='"+this.year+"-"+this.month+"-"+this.date+"' title=双击可进行编缉 ondblclick='this.readOnly=false;this.focus()' onblur='this.readOnly=true' readonly>");  document.write("<button style='width:60px;height:18px;font-size:12px;margin:1px;border:1px solid #A4B3C8;background-color:#DFE7EF;' type=button onclick=this.nextSibling.style.display='block' onfocus=this.blur()>选择日期</button>");</P>
<P>  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'>&lt;&lt;</td>");  document.write("        <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=subMonth(this) title='减小月份'>&lt;</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'>&gt;</td>");  document.write("        <td width=12% onmouseover=this.className='ds_border' onmouseout=this.className='' onclick=addYear(this) title='增加年份'>&gt;&gt;</td>");  document.write("      </tr>");  document.write("    </table>");</P>
<P>  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++) document.write("      <td>"+week[i]+"</td>");  document.write("      </tr>");  document.write("    </table>");</P>
<P>  document.write("    <table cellpadding=0 cellspacing=2 width=140 bgcolor=#EEEEEE>");  for(i=0;i<6;i++)  {    document.write("    <tr align=center>"); for(j=0;j<7;j++)      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>");</P>
<P>  document.write("    <span style=cursor:hand onclick=this.parentNode.parentNode.style.display='none'>【关闭】</span>");  document.write("  </div>");  document.write("</div>");</P>
<P>  dateShow(document.all("DS_"+this.inputName).nextSibling.nextSibling.childNodes[0].childNodes[2],this.year,this.month)}</P>
<P>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))}</P>
<P>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))}</P>
<P>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);  }  myObj[2].innerHTML=month;  dateShow(obj.parentNode.parentNode.parentNode.nextSibling.nextSibling,eval(myObj[0].innerHTML),eval(myObj[2].innerHTML))}</P>
<P>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))}</P>
<P>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.getYear()&&(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';  }}</P>
<P>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)    inputObj.value=myObj[0].innerHTML+"-"+myObj[2].innerHTML+"-"+obj.innerHTML;  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'}</P>
<P>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);  }}</script><table>                          <tr>                            <TD width=121>入住日期：</TD>                            <td width="550"><script language=javascript>  var myDate=new dateSelector();    myDate.inputName='start_date';  //注意这里设置输入框的name，同一页中日期输入框，不能出现重复的name。  myDate.display();                            </script>&nbsp;</td>                          </tr>                          <tr>                            <TD width=121>离店日期：</TD>                            <td><script language=javascript>    myDate.inputName='end_date';  //注意这里设置输入框的name，同一页中的日期输入框，不能出现重复的name。  myDate.display();</script></td></tr></table></P>

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