An Ajax instance for paging

Now, more and more Ajax applications are used. The company found some materials on the Internet so that they can be used in the future, however, I have not found any examples in development. Now I have posted a simple example for your reference. I hope it will be helpful.

Program environment hibernate + spring + sturts

Code used for paging in JSP.

<Script language = "JavaScript">
VaR http_request = false;
Function send_request (URL) {// initialize, specify the processing function, and send the request Function
Http_request = false;
// Start initializing the XMLHTTPRequest object
If (window. XMLHttpRequest) {// Mozilla Browser
Http_request = new XMLHttpRequest ();
If (http_request.overridemimetype) {// sets the mime category
Http_request.overridemimetype ('text/xml ');
}
}
Else if (window. activexobject) {// IE browser
Try {
Http_request = new activexobject ("msxml2.xmlhttp ");
} Catch (e ){
Try {
Http_request = new activexobject ("Microsoft. XMLHTTP ");
} Catch (e ){}
}
}
If (! Http_request) {// exception. An error occurred while creating the object instance.
Window. Alert ("the XMLHTTPRequest object instance cannot be created .");
Return false;
}
Http_request.onreadystatechange = processrequest;
// Determine the request sending method and URL and whether to execute the following code synchronously
Http_request.open ("Post", URL, true );
Http_request.send (null );
}
// Function for processing the returned information
Function processrequest (){
If (http_request.readystate = 4) {// judge the object status
If (http_request.status = 200) {// The information has been returned successfully. Start to process the information.


Document. getelementbyid ('dd'). innerhtml = http_request.responsetext;
} Else {// The page is abnormal.
Alert ("the page you requested has an exception. ");
}
}
}
Function usercheck (username ){
Send_request ('<HTML: rewrite page = ""/>/ology/index. do? Bar = <Bean: write name = "barname"/> & ajx = 1 & page = '+ username );
}
</SCRIPT>

<TD id = "DD" width = "78%" Height = "493" valign = "TOP">
<Table width = "100%" border = "0" cellspacing = "0" cellpadding = "0">
<Tr>
<TD width = "574"> & nbsp; </TD>
</Tr>
<Logic: notempty name = "bar" property = "content">
<Tr>
<TD> <Table width = "100%" border = "0" cellspacing = "0" cellpadding = "0">
<Tr>
<TD Height = "4"> </TD>
</Tr>

<Logic: iterate id = "sub" name = "bar" property = "content">
<Tr>
<TD>
<Table width = "98%" border = "0" align = "center" cellpadding = "0" cellspacing = "0">
<Tr>
& Lt; TD width = "16%" align = "center" & gt;
<Logic: equal name = "sub" property = "infopictype" value = "0">
<Bean: write name = "sub" property = "infominipic"/> "width =" 82 "Height =" 82 "border =" 0 ">
</Logic: equal>
<Logic: equal name = "sub" property = "infopictype" value = "1">

</Logic: equal>

</TD>
<TD width = "84%"> <SPAN class = "blue12px">
<Bean: write name = "sub" property = "infotitle"/> </span> <SPAN class = "f12dred"> [<a href =
<Logic: equal name = "sub" property = "isrelink" value = "0">
"<HTML: rewrite page =" "/>/ology/detail. do? Infoid = <Bean: write name = "sub" property = "infoid"/>"
</Logic: equal>
<Logic: equal name = "sub" property = "isrelink" value = "1">
"<Bean: write name =" sub "property =" relinkurl "/>"
</Logic: equal>
Target = "_ blank" class = "link_blue23_12"> full text </a>] </span> </TD>
</Tr>
</Table>
</TD>
</Tr>
<Tr>
<TD width = "10"> </TD>
</Tr>
<Tr>
<TD> & nbsp; </TD>
</Tr>
</Logic: iterate>
</Table> </TD>
</Tr>

<Tr>
<TD align = "center"> /appweb/ology/images/line001.gif "width =" 566 "Height =" 15 "> </TD>
</Tr>
<Tr>
<TD> <Div align = "center">
<SPAN class = "black12px"> pagination </span>
<A href = "javascript: usercheck ('1');" class = "link_blue23_12"> homepage </a> <SPAN class = "link_darkblue_12">
<A href = "javascript: usercheck ('<Bean: write name =" bar "property =" page. previouspage "/> ');" class = "link_blue23_12"> previous page </a> </span> <SPAN class = "link_blue23_12">
<A href = "javascript: usercheck ('<Bean: write name =" bar "property =" page. nextpage "/> ');" class = "link_blue23_12"> next page </a> </span> <SPAN class = "link_darkblue_12">
<A href = "javascript: usercheck ('<Bean: write name =" bar "property =" page. totalpage "/> ');" class = "link_blue23_12"> last page </a> </span>
<SPAN class = "black12px"> <Bean: write name = "bar" property = "page. currentpage "/>/<Bean: write name =" bar "property =" page. totalpage "/> page </span>
<SPAN class = "black12px"> 20 items/page </span> <SPAN class = "text_black_12px"> </div> </TD>
</Tr>
</Logic: notempty>
<Tr>
<TD> & nbsp; </TD>
</Tr>
</Table>
</TD>

Of course, this is not a complete JSP page. I just post the code of pagination.

In the paging link, we use js to call Ajax to send paging requests. I believe all users who have used sturts know that we have called action, and the return is a page, the reverse page will replace the above JSP page, which completes a simple Ajax request.

Of course this is just the most simple application, if you use different applications, welcome you to give me E-MAIL, we discuss together.