Ajax example code to perfectly implement the paging function of two web pages_PHP tutorial

分页的首页

复制代码 代码如下:

武侠小说分页



<script><br>var page='';<br>  function init(page){<br>  document.getElementById("tables").innerHTML='';<br>   var xhr;<br>   if(window.XMLHttpRequest){<br> xhr = new XMLHttpRequest();<br>}else if(window.ActiveXObject){<br> xhr =new ActiveXObject("Microsoft.XMLHTTP")<br>}<br>var url="fenye.php";<br> xhr.open("POST",url,true);<br> xhr.onreadystatechange=callback;<br> xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");<br> if(page){<br> xhr.send("page="+page);<br> }<br> else {xhr.send("page=1");}<br> var content;<br> function callback(){<br>   if(xhr.readyState==4){<br>     if(xhr.status==200){<br>      var json =eval('('+xhr.responseText+')');<br>   //alert(xhr.responseText);<br>  var fenye=json.str;<br> //  alert(fenye);<br>     document.getElementById('div').innerHTML=fenye;<br>  content="<th>ID</th><th>名称</th><th>作者</th><th>出版社</th><th>ISBN号</th><th>类型</th><th>价格</th>";<br>  for(var i=0;i<json.info.length;i++){<BR>  content+="<tr><td>"+json.info[i].id+"</td><td>"+json.info[i].name+"</td><td>"+json.info[i].author+"</td><td>"+json.info[i].publisher+"</td><td>"+json.info[i].isbn+"</td><td>"+json.info[i].type+"</td><td>"+json.info[i].price+"</tr>";<br>  document.getElementById("tables").innerHTML=content;<br>  }<br>    // alert(fenye);<br>     }<br>   }<br>   }<br> }<br><br></script>

 

jquery实现$.ajax的分页

ID	名称	作者	出版社	ISBN号	类型	价格

 

 

分页的php精华代码

复制代码 代码如下:

//Command the model layer to process data
$link=mysql_connect('localhost','root','') or die("failure");
mysql_select_db('books',$link) or die("Error connecting to the database!");
//Display the number of records per page
$pagesize = 2;
//Find the total number of records
$sql = "select count(*) as total_rows from books";
$result = mysql_query($sql);
$total_rows = mysql_fetch_array($result);
//Find the total Number of pages
$pages = ceil($total_rows[0]/$pagesize);
//The current page
$page = $_POST['page'];
$strtext = " Current page ".$page."."Total".$pages."Page"."Total".$total_rows[0]."Record";
//var_dump($str);
//Next, I need to find the corresponding data based on the currently clicked page number
$offset = $pagesize*($page-1);
$sql = "select * from books limit $offset,$pagesize ";
mysql_query("set names utf8");
$res=mysql_query($sql);

$rows=array();
while($row=mysql_fetch_assoc($ res)){
$rows[]=$row;
}
$pageInfo = $rows;
//echo json_encode($pageInfo);
//var_dump($pageInfo) ;
//The data link will be obtained and then returned to
$first=1;
$prev=$page-1;
$next=$page+1;
$last=$ pages;

//Command the view layer to display data
$first_a = "";
if($page>1){
$prev_a = "";
}
if($page<$pages){
$next_a = "";
}
$last_a = "";
@$str = $strtext.$first_a.$prev_a.$next_a.$last_a;
//var_dump($str);
$info = array('str'=>$str,'info'=> $pageInfo);
echo json_encode($info);

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