Javascript to implement the calendar control (year, month, and day close button)

Google's friends who often use google will surely remember the beautiful calendar controls of google, so we will also implement a process. Although the functions and effects are not comparable, what is important is the implementation process.
The following is the html structure to be implemented::
<Div id = "a"> <div id = "head"> <span id = "yface"> year: <select id = "year"> </select> </span> <span id = "mface"> month: <select id = "month"> </select> </span> </div> <div id = "biaoti"> </div> <div id = "body"> </div>
Let's talk about the calendar query algorithm:
W = y + parseInt (y/4) + parseInt (c/4)-2 * c + parseInt (26 * (m + 1)/10) + D-1;
The following is a detailed description of the process. If you are interested, you can look at it:
Http://www.jb51.net/article/32572.htm
The following javascript code is implemented:: Copy codeThe Code is as follows: sx. activex. calender = {
Bind: function (target ){
Var a = document. createElement ("div ");
Var head = document. createElement ("div ");
Var biaoti = document. createElement ("div ");
Var select = document. createElement ("select ");
Var yface = document. createElement ("span ");
Var mface = document. createElement ("span ");
Var body = document. createElement ("div ");
Var select1 = document. createElement ("select ");
Yface. appendChild (select );
Mface. appendChild (select1 );
Head. appendChild (yface );
Head. appendChild (mface );
A. appendChild (head );
A. appendChild (biaoti );
A. appendChild (body );
Yface. insertBefore (document. createTextNode ("year"), yface. firstChild)
Mface. insertBefore (document. createTextNode ("month"), mface. firstChild)
A. style. position = "absolute ";
Biaoti. style. height = "10% ";
For (var I = 0; I <7; I ++ ){
Var can = document. createElement ("span ")
Can. style. width = "14% ";
You can. style. height = "100% ";
Can. style. textAlign = "center ";
Biaoti. appendChild (can );
}
Biaoti. all [0]. innerText = "day"
Biaoti. all [1]. innerText = "1"
Biaoti. all [2]. innerText = "2"
Biaoti. all [3]. innerText = "3"
Biaoti. all [4]. innerText = "4"
Biaoti. all [5]. innerText = "5"
Biaoti. all [6]. innerText = "6"
Head. style. height = "20% ";
A. style. position = "absolute ";
A. style. height = "200px ";
A. style. width = "302px ";
A. style. border = "1px red solid ";
Yface. style. width = "50% ";
Yface. style. padding = "5px ";
Yface. style. height = "100% ";
Select. style. width = "80% ";
For (var I = 1960; I <2010; I ++ ){
Var option = document. createElement ("option ");
Option. text = I;
Select. add (option );
}
Mface. style. width = "50% ";
Mface. style. padding = "5px ";
Mface. style. height = "100% ";
Select1.style. width = "80% ";
For (var I = 1; I <= 12; I ++ ){
Var option = document. createElement ("option ");
Option. text = I;
Select1.add (option );
}
Body. style. height = "70% ";
For (var I = 0; I <42; I ++ ){
Var span = document. createElement ("span ");
Span. style. width = "14% ";
Span. style. height = "16% ";
Span. style. textAlign = "center ";
Span. onmouseover = function (){
This. style. cursor = "hand ";
This. tempcolor = this. style. backgroundColor;
This. style. backgroundColor = "lightblue ";
}
Span. onmouseout = function (){
This. style. backgroundColor = this. tempcolor;
}
Span. onclick = function (){
Target. value = select. options [select. selectedIndex]. text + "year" + select1.options [select1.selectedIndex]. text + "month" + this. innerText + "day ";
A. parentNode. removeChild ();
}
Body. appendChild (span );
}
Select. onchange = function (){
For (var o in body. all ){
Body. all [o]. innerText = "";
If (o. toString ()! = "Length ")
Body. all [o]. style. backgroundColor = "";
}
Var year1 = this. options [this. selectedIndex]. text;
Var month1 = select1.options [select1.selectedIndex]. text;
Var y = parseInt (year1.substr (2, 2)-0 );
Var c = parseInt (year1.substr (0, 2 ));;
Var m = parseInt (month1 );;
M = m> = 3? M :( y = Y-1, m + 12 );
Var d = 1;
Var w = y + parseInt (y/4) + parseInt (c/4)-2 * c + parseInt (26 * (m + 1)/10) + D-1;
If (w <0) w = w + 700;
W = w % 7;
Switch (parseInt (month1 )){
Case 2:
If (parseInt (year1) % 4 = 0)
Var r = 29;
Else
Var r = 28;
Var day = w;
For (var d = 1; d <= r; d ++ ){
Body. all [day ++]. innerText = d;
If (parseInt (year1) = (new Date ()). getYear () & parseInt (month1) = (new Date ()). getMonth () + 1 & d = (new Date ()). getDate ())
Body. all [day-1]. style. backgroundColor = "red ";
Body. all [41]. innerText = "close ";
}
Break;
Default:

If (parseInt (month1) = 1 | parseInt (month1) = 3 | parseInt (month1) = 5 | parseInt (month1) = 7 | parseInt (month1) = 8 | parseInt (month1) = 10 | parseInt (month1) = 12)
Var r = 31;
Else
Var r = 30;
Var day = w;
For (var d = 1; d <= r; d ++ ){
Body. all [day ++]. innerText = d;
If (parseInt (year1) = (new Date ()). getYear () & parseInt (month1) = (new Date ()). getMonth () + 1 & d = (new Date ()). getDate ())
Body. all [day-1]. style. backgroundColor = "red ";
Body. all [41]. innerText = "close ";
}
Break;

}

}
Select1.onchange = function (){
For (var o in body. all ){
Body. all [o]. innerText = "";
If (o. toString ()! = "Length ")
Body. all [o]. style. backgroundColor = "";
}
Var month1 = this. options [this. selectedIndex]. text;
Var year1 = select. options [select. selectedIndex]. text;
Var y = parseInt (year1.substr (2, 2)-0 );
Var c = parseInt (year1.substr (0, 2 ));
Var m = parseInt (month1 );
M = m> = 3? M :( y = Y-1, m + 12 );
Var d = 1;
Var w = y + parseInt (y/4) + parseInt (c/4)-2 * c + parseInt (26 * (m + 1)/10) + D-1;
If (w <0) w = w + 700;
W = w % 7;
Switch (parseInt (month1 )){
Case 2:
If (parseInt (year1) % 4 = 0)
Var r = 29;
Else
Var r = 28;
Var day = w;
For (var d = 1; d <= r; d ++ ){
Body. all [day ++]. innerText = d;
If (parseInt (year1) = (new Date ()). getYear () & parseInt (month1) = (new Date ()). getMonth () + 1 & d = (new Date ()). getDate ())
Body. all [day-1]. style. backgroundColor = "red ";
Body. all [41]. innerText = "close ";
}
Break;
Default:

If (parseInt (month1) = 1 | parseInt (month1) = 3 | parseInt (month1) = 5 | parseInt (month1) = 7 | parseInt (month1) = 8 | parseInt (month1) = 10 | parseInt (month1) = 12)
Var r = 31;
Else
Var r = 30;
Var day = w;
For (var d = 1; d <= r; d ++ ){
Body. all [day ++]. innerText = d;
If (parseInt (year1) = (new Date ()). getYear () & parseInt (month1) = (new Date ()). getMonth () + 1 & d = (new Date ()). getDate ())
Body. all [day-1]. style. backgroundColor = "red ";
Body. all [41]. innerText = "close ";
}
Break;

}

}
Var date = new Date ();

For (var s1 = 0; s1 <select. options. length; s1 ++ ){
If (parseInt (select. options [s1]. text) = parseInt (date. getYear ())){
Select. options [s1]. selected = true;
Break;
}
}
For (var s2 = 0; s2 <select1.options. length; s2 ++ ){
If (parseInt (select1.options [s2]. text) = parseInt (date. getMonth () + 1 ){
Select1.options [s2]. selected = true;
Break;
}
}
Select. onchange ();
For (var I in body. all ){
If (body. all [I]. innerText = date. getDate ()){
Body. all [I]. style. backgroundColor = "red ";
}
}
Target. onfocus = function (){
Document. body. appendChild ();
A. style. left = target. offsetLeft + "px ";;
A. style. top = target. offsetTop + target. offsetHeight + "px ";
}
Target. onblur = function (){
If (a & window. event. clientY>. offsetTop & window. event. clientY <. offsetTop +. offsetHeight & window. event. clientX>. offsetLeft & window. event. clientX <. offsetLeft +. offsetWidth)
Return;
If (! A) return;
A. parentNode. removeChild ();
}
Body. all [41]. innerText = "close ";
Body. all [41]. onclick = function (){
This. style. backgroundColor = "";
A. parentNode. removeChild ();

}
}
}

The entry parameter is the html object to be bound, which is generally text input.
The following is the call code:
<Html>
<Head>
<Title> Untitled Document </title>
</Head>
<Body>
<Script src = "kongjian. js"> </script>
<Input type = "text" id = "a">
<Script>
Sx. activex. calender. bind (document. getElementById (""));
</Script>
</Body>
</Html>
In this case, the code is too long and not very good. If any of you have a better solution, please contact me more.