Jquery: Ajax realizes page turning without refreshing function code_jquery

var pageSize = "10";//Number of rows per page
var currentPage = "1";//Current page
var totalPage = "0";//Total number of pages
var rowCount = "0";//Total number of items
var params="";//Parameters
var url="activity_list.action";//action
$(document).ready(function( ){//The jquery code is loaded as the document is loaded
//Paging query
function queryForPages(){
$.ajax({
url:url,
type:'post ',
dataType:'json',
data:"qo.currentPage=" currentPage "&qo.pageSize=" pageSize params,
success:function callbackFun(data){
//Parse json
var info = eval("(" data ")");
//Clear data
clearDate();
fillTable(info);
}
});
}
//Fill data
function fillTable(info){
if(info.length>1){
totalPage = info[info.length-1].totalPage;
var tbody_content=""; //Do not initialize the string "", it will default to "undefined"
for(var i=0 ; itbody_content =" "" (i 1 (currentPage-1)*pageSize) ""
"" info[i].title.substr(0,20) ""
"" info[i].address.substr( 0,6) ""
"" info[i].quota_sign "人"
"" info[i].type ""
"Edit"
""
$("#t_body").html(tbody_content);
}
}else{
$("#t_head").html("");
$("#t_body") .html("

" info.msg "

");
}
}

//Clear data
function clearDate(){
$("#t_body").html("");
}

// Search activity
$("#searchActivity").click(function(){ queryForPages(); });
//Homepage
$("#firstPage").click(function(){
currentPage="1";
queryForPages();
});
//Previous page
$("#previous").click(function(){
if (currentPage>1){
currentPage-- ;
}
queryForPages();
});
//Next page
$("#next").click (function(){
if(currentPagecurrentPage ;
}
queryForPages();
});
//Last page
$(" #last").click(function(){
currentPage = totalPage;
queryForPages();
});

});

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Homepage
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