AJAX obtains the current time and time format output of the server.

Source: Internet
Author: User

AJAX obtains the current server time
------------------------------ WebService1.asmx ----------------------------------
Copy codeThe Code is as follows:
// To allow ASP. net ajax to call this Web service from a script, cancel the comments to the downstream.
[System. Web. Script. Services. ScriptService]
Public class WebService1: System. Web. Services. WebService
{
[WebMethod]
Public string HelloWorld ()
{
Return "Hello World ";
}
[WebMethod]
Public string GetDate ()
{
Return DateTime. Now. ToString ("yyyy-MM-dd hh: mm: ss ");
}
}

------------------------------------HTMLPage1.htm ---------------------------------------
Copy codeThe Code is as follows:
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Title> </title>
<Script src = "js/Jquery1.7.js" type = "text/javascript"> </script>
<Script type = "text/javascript">
$ (Function (){
Function GetDate (){
$. Ajax ({
Type: "post", // method used when the client sends a request to the server
ContentType: "application/json", // specifies the type of content that the client sends to the server and the type of content that the server returns to the client in json format.
Url: "WebService1.asmx/GetDate", // specifies the method on which the client sends the request
Data: "{}", // specify the parameters that are sent along with the request to the server
Success: function (result) {// callback function executed after the client successfully calls the server method.
$ ('# Mydiv'). text (result. d );
}
})
}
SetInterval (GetDate, 1000 );
})
</Script>
</Head>
<Body>
<Div id = "mydiv"> </div>
<Input id = "Button1" type = "button" value = "Get server time"/>
</Body>
</Html>

Ajax obtains the server time
Copy codeThe Code is as follows:
<Script language = "javascript" type = "text/javascript">
// Because the execution of the program takes time, the time is not very accurate, with an error of less than 2000 milliseconds
Var xmlHttp = false;
// Obtain the server time
Try {
XmlHttp = new ActiveXObject ("Msxml2.XMLHTTP ");
} Catch (e ){
Try {
XmlHttp = new ActiveXObject ("Microsoft. XMLHTTP ");
} Catch (e2 ){
XmlHttp = false;
}
}
If (! XmlHttp & typeof XMLHttpRequest! = 'Undefined '){
XmlHttp = new XMLHttpRequest ();
}
XmlHttp. open ("GET", "http://www.time.ac.cn", false );
XmlHttp. setRequestHeader ("Range", "bytes =-1 ");
XmlHttp. send (null );
Severtime = new Date (xmlHttp. getResponseHeader ("Date "));
// Obtain the server date
Var year = severtime. getFullYear ();
Var month = severtime. getMonth () + 1;
Var date = severtime. getDate ();
// Obtain the server time
Var hour = severtime. getHours ();
Var minu = severtime. getMinutes ();
Var seco = severtime. getSeconds ();
// Format the output server time
Function getSeverTime (){
Seco ++;
If (seco = 60 ){
Minu + = 1;
Seco = 0;
}
If (minu = 60 ){
Hour + = 1;
Minu = 0;
}
If (hour = 24 ){
Date + = 1;
Hour = 0;
}
// Date Processing
If (month = 1 | month = 3 | month = 5 | month = 7
| Month = 8 | month = 10 | month = 12)
{
If (date = 32)
{
Date = 1;
Month + = 1;
}
} Else if (month = 4 | month = 6 | month = 9 | month = 11 ){
If (date = 31 ){
Date = 1;
Month + = 1;
}
} Else if (month = 2 ){
If (year % 4 = 0 & amp; year % 100! = 0) {// leap year Processing
If (date = 29 ){
Date = 1;
Month + = 1;
}
} Else {
If (date = 28 ){
Date = 1;
Month + = 1;
}
}
}
If (month = 13 ){
Year + = 1;
Month = 1;
}
Sseco = addZero (seco );
Sminu = addZero (minu );
Shour = addZero (hour );
Sdate = addZero (date );
Smonth = addZero (month );
Syear = year;
Innerdata = "current server time :";
Document. getElementById ("servertime "). innerHTML = innerdata + syear + "-" + smonth + "-" + sdate + "" + shour + ":" + sminu + ":" + sseco;
SetTimeout ("getSeverTime ()", 1000 );
SetTimeout ("getClientTime ()", 100 );
}
Function addZero (num ){
Num = Math. floor (num );
Return (num <= 9 )? ("0" + num): num );
}
</Script>

Copy codeThe Code is as follows:
<Body onLoad = "getSeverTime ();">
<P id = "servertime"> </p>
<P id = "clienttime"> </p>
<P id = "xctime"> </p>
</Body>

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