Complete example of js implementation of date picker accurate to seconds_javascript skills

The example in this article describes the js implementation of a date picker accurate to seconds. Share it with everyone for your reference, the details are as follows:

// 二、var bMoveable=true;
var strFrame;
document.writeln('');
strFrame='';
strFrame+='INPUT.button{BORDER-RIGHT: #63A3E9 1px solid;BORDER-TOP: 
#63A3E9 1px solid;BORDER-LEFT: #63A3E9 1px solid;';
strFrame+='BORDER-BOTTOM: #63A3E9 1px solid;BACKGROUND-COLOR: #63A3E9;font-family:宋体;}';
strFrame+='TD{FONT-SIZE: 9pt;font-family:宋体;}';
strFrame+='';
strFrame+='';
strFrame+='var datelayerx,datelayery;';
strFrame+='var bDrag;';
strFrame+='function document.onmousemove()';
strFrame+='{if(bDrag && window.event.button==1)';
strFrame+=' {var DateLayer=parent.document.all.endDateLayer.style;';
strFrame+=' DateLayer.posLeft += window.event.clientX-datelayerx;';
strFrame+=' DateLayer.posTop += window.event.clientY-datelayery;}}';
strFrame+='function DragStart()';
strFrame+='{var DateLayer=parent.document.all.endDateLayer.style;';
strFrame+=' datelayerx=window.event.clientX;';
strFrame+=' datelayery=window.event.clientY;';
strFrame+=' bDrag=true;}';
strFrame+='function DragEnd(){';
strFrame+=' bDrag=false;}';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='>';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+=' 日';
strFrame+=' 一 二';
strFrame+=' 三 四';
strFrame+=' 五 六';
strFrame+='';
strFrame+='';
strFrame+='';
var n=0; for (j=0;j'; for (i=0;i';n++;}
strFrame+='';}
strFrame+='';
for (i=35;i';
strFrame+='置空  当前  关闭 ';
strFrame+='';
strFrame+='';
strFrame+='';
strFrame+=' ';
strFrame+='' ;
strFrame+='   ';
strFrame+='' ;
strFrame+='   ';
strFrame+='' ;
strFrame+='   ';
strFrame+='';
window.frames.endDateLayer.document.writeln(strFrame);
window.frames.endDateLayer.document.close(); //解决ie进度条不结束的问题
//==================================================== WEB 页面显示部分=====================================================
var outObject;
var outButton; //点击的按钮
var outDate=""; //存放对象的日期
var bUseTime=false; //是否使用时间
var odatelayer=window.frames.endDateLayer.document.all; //存放日历对象
var odatelayer=window.endDateLayer.document.all;
//odatelayer.bUseTimeLayer.innerText="NO";
bImgSwitch();
odatelayer.bUseTimeLayer.innerHTML=bImg;
function setday(tt,obj) //主调函数
{
if (arguments.length > 2){alert("对不起！传入本控件的参数太多！");return;}
if (arguments.length == 0){alert("对不起！您没有传回本控件任何参数！");return;}
var dads = document.all.endDateLayer.style;
var th = tt;
var ttop = tt.offsetTop; //TT控件的定位点高
var thei = tt.clientHeight; //TT控件本身的高
var tleft = tt.offsetLeft; //TT控件的定位点宽
var ttyp = tt.type; //TT控件的类型
while (tt = tt.offsetParent){ttop+=tt.offsetTop; tleft+=tt.offsetLeft;}
dads.top = (ttyp=="image") ? ttop+thei : ttop+thei+6;
dads.left = tleft;
outObject = (arguments.length == 1) ? th : obj;
outButton = (arguments.length == 1) ? null : th; //设定外部点击的按钮
//根据当前输入框的日期显示日历的年月
var reg = /^(\d+)-(\d{1,2})-(\d{1,2})/; //不含时间
var r = outObject.value.match(reg);
if(r!=null){
 r[2]=r[2]-1;
 var d=new Date(r[1],r[2],r[3]);
 if(d.getFullYear()==r[1] && d.getMonth()==r[2] && d.getDate()==r[3])
 {
  outDate=d;
  parent.meizzTheYear = r[1];
  parent.meizzTheMonth = r[2];
  parent.meizzTheDate = r[3];
 }
 else
 {
  outDate="";
 }
 meizzSetDay(r[1],r[2]+1);
}
else
{
 outDate="";
 meizzSetDay(new Date().getFullYear(), new Date().getMonth() + 1);
}
dads.display = '';
//判断初始化时是否使用时间,非严格验证
//if (outObject.value.length>10)
//{
 bUseTime=true;
 bImgSwitch();
 odatelayer.bUseTimeLayer.innerHTML=bImg;
 meizzWriteHead(meizzTheYear,meizzTheMonth);
//}
//else
//{
// bUseTime=false;
// bImgSwitch();
// odatelayer.bUseTimeLayer.innerHTML=bImg;
// meizzWriteHead(meizzTheYear,meizzTheMonth);
//}
try
{
 event.returnValue=false;
}
catch (e)
{
 //此处排除错误，错误原因暂未找到。
}
}
var MonHead = new Array(12); //定义阳历中每个月的最大天数
MonHead[0] = 31; MonHead[1]= 28; MonHead[2]= 31; MonHead[3]= 30; MonHead[4]= 31; MonHead[5] = 30;
MonHead[6] =31; MonHead[7]= 31; MonHead[8]= 30; MonHead[9 = 31; MonHead[10]= 30; MonHead[11] = 31;
var meizzTheYear=new Date().getFullYear(); //定义年的变量的初始值
var meizzTheMonth=new Date().getMonth()+1; //定义月的变量的初始值
var meizzTheDate=new Date().getDate(); //定义日的变量的初始值
var meizzTheHour=new Date().getHours(); //定义小时变量的初始值
var meizzTheMinute=new Date().getMinutes();//定义分钟变量的初始值
var meizzTheSecond=new Date().getSeconds();//定义秒变量的初始值
var meizzWDay=new Array(37); //定义写日期的数组
document.onclick = (function(){
with(window.event)
{
 if (srcElement != outObject && srcElement != outButton)
 closeLayer();
}
})
document.onkeyup = (function(){
if (window.event.keyCode==27){
 if(outObject)outObject.blur();
 closeLayer();
}
else if(document.activeElement)
{
 if(document.activeElement != outObject && document.activeElement != outButton)
 {
  closeLayer();
 }
}
})
function meizzWriteHead(yy,mm,ss) //往 head 中写入当前的年与月
{
odatelayer.meizzYearHead.innerText = yy + " 年";
odatelayer.meizzMonthHead.innerText = format(mm) + " 月";
//插入当前小时、分
odatelayer.meizzHourHead.innerText=bUseTime?(meizzTheHour+" 时"):"";
odatelayer.meizzMinuteHead.innerText=bUseTime?(meizzTheMinute+" 分"):"";
odatelayer.meizzSecondHead.innerText=bUseTime?(meizzTheSecond+" 秒"):"";
}
function tmpSelectYearInnerHTML(strYear) //年份的下拉框
{
if (strYear.match(/\D/)!=null){alert("年份输入参数不是数字！");return;}
var m = (strYear) ? strYear : new Date().getFullYear();
if (m  9999) {alert("年份值不在 1000 到 9999 之间！");return;}
var n = m - 50;
if (n  9999) n = 9974;
var s = " \r\n";
var selectInnerHTML = s;
for (var i = n; i " + i + "年" + "\r\n"; }
 else { selectInnerHTML += "" + i + "年" + "\r\n"; }
}
selectInnerHTML += "";
odatelayer.tmpSelectYearLayer.style.display="";
odatelayer.tmpSelectYearLayer.innerHTML = selectInnerHTML;
odatelayer.tmpSelectYear.focus();
}
function tmpSelectMonthInnerHTML(strMonth) //月份的下拉框
{
if (strMonth.match(/\D/)!=null){alert("月份输入参数不是数字！");return;}
var m = (strMonth) ? strMonth : new Date().getMonth() + 1;
var s = "   \r\n";
var selectInnerHTML = s;
for (var i = 1; i "+i+"月"+"\r\n"; }
 else { selectInnerHTML += ""+i+"月"+"\r\n"; }
}
selectInnerHTML += "";
odatelayer.tmpSelectMonthLayer.style.display="";
odatelayer.tmpSelectMonthLayer.innerHTML = selectInnerHTML;
odatelayer.tmpSelectMonth.focus();
}
/***** 增加 小时、分钟 ***/
function tmpSelectHourInnerHTML(strHour) //小时的下拉框
{
if (!bUseTime){return;}
if (strHour.match(/\D/)!=null){alert("小时输入参数不是数字！");return;}
var m = (strHour) ? strHour : new Date().getHours();
var s = "\r\n";
var selectInnerHTML = s;
for (var i = 0; i "+i+"\r\n"; }
 else { selectInnerHTML += ""+i+"\r\n"; }
}
selectInnerHTML += "";
odatelayer.tmpSelectHourLayer.style.display="";
odatelayer.tmpSelectHourLayer.innerHTML = selectInnerHTML;
odatelayer.tmpSelectHour.focus();
}
function tmpSelectMinuteInnerHTML(strMinute) //分钟的下拉框
{
if (!bUseTime){return;}
if (strMinute.match(/\D/)!=null){alert("分钟输入参数不是数字！");return;}
var m = (strMinute) ? strMinute : new Date().getMinutes();
var s = "\r\n";
var selectInnerHTML = s;
for (var i = 0; i "+i+"\r\n"; }
 else { selectInnerHTML += ""+i+"\r\n"; }
}
selectInnerHTML += "";
odatelayer.tmpSelectMinuteLayer.style.display="";
odatelayer.tmpSelectMinuteLayer.innerHTML = selectInnerHTML;
odatelayer.tmpSelectMinute.focus();
}
function tmpSelectSecondInnerHTML(strSecond) //秒的下拉框
{
if (!bUseTime){return;}
if (strSecond.match(/\D/)!=null){alert("分钟输入参数不是数字！");return;}
var m = (strSecond) ? strSecond : new Date().getMinutes();
var s = "\r\n";
var selectInnerHTML = s;
for (var i = 0; i "+i+"\r\n"; }
 else { selectInnerHTML += ""+i+"\r\n"; }
}
selectInnerHTML += "";
odatelayer.tmpSelectSecondLayer.style.display="";
odatelayer.tmpSelectSecondLayer.innerHTML = selectInnerHTML;
odatelayer.tmpSelectSecond.focus();
}
function closeLayer() //这个层的关闭
{
var o = document.getElementById("endDateLayer");
if (o != null)
{
 o.style.display="none";
}
}
function showLayer() //这个层的关闭
{
document.all.endDateLayer.style.display="";
}
function IsPinYear(year) //判断是否闰平年
{
if (0==year%4&&((year%100!=0)||(year%400==0))) return true;else return false;
}
function GetMonthCount(year,month) //闰年二月为29天
{
var c=MonHead[month-1];if((month==2)&&IsPinYear(year)) c++;return c;
}
function GetDOW(day,month,year) //求某天的星期几
{
var dt=new Date(year,month-1,day).getDay()/7; return dt;
}
function meizzPrevY() //往前翻 Year
{
if(meizzTheYear > 999 && meizzTheYear999 
&& meizzTheYear1){meizzTheMonth--}else{meizzTheYear--;meizzTheMonth=12;}
meizzSetDay(meizzTheYear,meizzTheMonth);
}
function meizzNextM() //往后翻月份
{
if(meizzTheMonth==12){meizzTheYear++;meizzTheMonth=1}else{meizzTheMonth++}
meizzSetDay(meizzTheYear,meizzTheMonth);
}
// TODO: 整理代码
function meizzSetDay(yy,mm) //主要的写程序**********
{
meizzWriteHead(yy,mm);
//设置当前年月的公共变量为传入值
meizzTheYear=yy;
meizzTheMonth=mm;
for (var i = 0; i " + meizzWDay[i] + "";
  da.title=(mm==1?12:mm-1) +"月" + meizzWDay[i] + "日";
  da.onclick=Function("meizzDayClick(this.innerText,-1)");
  if(!outDate)
  da.style.backgroundColor = ((mm==1?yy-1:yy) == new Date().getFullYear() &&
   (mm==1?12:mm-1) == new Date().getMonth()+1 && meizzWDay[i] == new Date().getDate()) ?
   "#5CEFA0":"#f5f5f5";
  else
  {
  da.style.backgroundColor =((mm==1?yy-1:yy)==outDate.getFullYear() 
  &&(mm==1?12:mm-1)== outDate.getMonth() + 1 &&
  meizzWDay[i]==outDate.getDate())? "#84C1FF" :
  (((mm==1?yy-1:yy) == new Date().getFullYear() && (mm==1?12:mm-1) == new Date().getMonth()+1 &&
  meizzWDay[i] == new Date().getDate()) ? "#5CEFA0":"#f5f5f5");
  //将选中的日期显示为凹下去
  if((mm==1?yy-1:yy)==outDate.getFullYear() && (mm==1?12:mm-1)== outDate.getMonth() + 1 &&
  meizzWDay[i]==outDate.getDate())
  {
   da.borderColorLight="#FFFFFF";
   da.borderColorDark="#63A3E9";
  }
  }
 }
 else if (i>=firstday+GetMonthCount(yy,mm)) //下个月的部分
 {
  da.innerHTML="" + meizzWDay[i] + "";
  da.title=(mm==12?1:mm+1) +"月" + meizzWDay[i] + "日";
  da.onclick=Function("meizzDayClick(this.innerText,1)");
  if(!outDate)
  da.style.backgroundColor = ((mm==12?yy+1:yy) == new Date().getFullYear() &&
   (mm==12?1:mm+1) == new Date().getMonth()+1 && meizzWDay[i] == new Date().getDate()) ?
   "#5CEFA0":"#f5f5f5";
  else
  {
  da.style.backgroundColor =((mm==12?yy+1:yy)==outDate.getFullYear() 
  && (mm==12?1:mm+1)== outDate.getMonth() + 1 &&
  meizzWDay[i]==outDate.getDate())? "#84C1FF" :
  (((mm==12?yy+1:yy) == new Date().getFullYear() && (mm==12?1:mm+1) == new Date().getMonth()+1 &&
  meizzWDay[i] == new Date().getDate()) ? "#5CEFA0":"#f5f5f5");
  //将选中的日期显示为凹下去
  if((mm==12?yy+1:yy)==outDate.getFullYear() && (mm==12?1:mm+1)== outDate.getMonth() + 1 &&
  meizzWDay[i]==outDate.getDate())
  {
   da.borderColorLight="#FFFFFF";
   da.borderColorDark="#63A3E9";
  }
  }
 }
 else //本月的部分
 {
  da.innerHTML="" + meizzWDay[i] + "";
  da.title=mm +"月" + meizzWDay[i] + "日";
  da.onclick=Function("meizzDayClick(this.innerText,0)"); //给td赋予onclick事件的处理
  //如果是当前选择的日期，则显示亮蓝色的背景；如果是当前日期，则显示暗黄色背景
  if(!outDate)
  da.style.backgroundColor = (yy == new Date().getFullYear() && mm == new Date().getMonth()+1 
  && meizzWDay[i] == new Date().getDate())?
   "#5CEFA0":"#f5f5f5";
  else
  {
  da.style.backgroundColor =(yy==outDate.getFullYear() && mm== outDate.getMonth() + 1 
  && meizzWDay[i]==outDate.getDate())?
   "#84C1FF":((yy == new Date().getFullYear() && mm == new Date().getMonth()+1 
   && meizzWDay[i] == new Date().getDate())?
   "#5CEFA0":"#f5f5f5");
  //将选中的日期显示为凹下去
  if(yy==outDate.getFullYear() && mm== outDate.getMonth() + 1 && meizzWDay[i]==outDate.getDate())
  {
   da.borderColorLight="#FFFFFF";
   da.borderColorDark="#63A3E9";
  }
  }
 }
  da.style.cursor="hand"
  }
 else { da.innerHTML="";da.style.backgroundColor="";da.style.cursor="default"; }
}
}
function meizzDayClick(n,ex) //点击显示框选取日期，主输入函数*************
{
parent.meizzTheDate=n;
var yy=meizzTheYear;
var mm = parseInt(meizzTheMonth)+ex; //ex表示偏移量，用于选择上个月份和下个月份的日期
var hh=meizzTheHour;
var mi=meizzTheMinute;
var se=meizzTheSecond;
//判断月份，并进行对应的处理
if(mm12){
 yy++;
 mm=mm-12;
}
if (mm

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