PHP代码：php+jquery实现无刷新留言板 ajax运用.doc

PHP代码：php+jquery实现无刷新留言板 ajax运用 meta charset=’utf-8′ titleajax无刷新留言板-制作/title script src=”/ajax/libs/jquery/1.4/jquery.min.js” type=”text/javascript”//script script type=”text/javascript” jQuery(function(){ $.ajax({ type: “POST”, url: “ajax.php”, success: function(msg){ $(‘#post_result’).html(msg); } }); }) jQuery(function(){ $(“#tj”).click(function(){ $.ajax({ type: “POST”, url: “ajax.php”, data: “user=”+$(“input[name=user]“).val()+”pwd=”+$(“input[name=pwd]“).val(), success: function(msg){ $(“input[name=user]“).val(“”); $(“input[name=pwd]“).val(“”); //向每个匹配的元素内部前置内容。 //这是向所有匹配元素内部的开始处插入内容的最佳方式。 $(‘#post_result’).prepend(msg); } }); }); }) /script p align=center–a href=”” target=_blank/a/p div id=post_result /div div id=post 用户名：input type=text name=user value=”br 密码：input type=password name=pwd value=”br input type=button name=tj id=tj value=”提交”br /div ———————————————————————- 留言数据处理页面：ajax.php ———————————————————————- ?php $host=”localhost”; $user=”root”; $pwd=”root”; $dbname=”test”; $link = mysql_connect($host, $user, $pwd)or die(“Could not connect: ” . mysql_error()); mysql_select_db($dbname, $link) or die (‘Can\’t use test : ‘ . mysql_error()); mysql_query(“SET NAMES ‘utf8′”); mysql_query(“SET CHARACTER_SET_CLIENT=utf8″); mysql_query(“SET CHARACTER_SET_RESULTS=utf8″); if($_REQUEST[user]){//提交数据 $user=$_REQUEST[user]; $pwd=$_REQUEST[pwd]; $sql_insert=”INSERT INTO `test`.`user` ( `id` , `user` , `pwd` ) VALUES (NULL , ‘$user’, ‘$pwd’);”; mysql_query($sql_insert); if($id=mysql_insert_id()){ $sql_page=”select * from user where id= $id”; $page_res=mysql_query($sql_page); while ($arr=mysql_fetch_array($page_res)){ $ajax_arr[page_content].=’id:’.$arr[id].’bruser:’.$arr[user].’brhr’; } echo $ajax_arr[page_content]; }else{ echo mysql_error(); } }else{//载入页面时读取数据 $sql_page=”select * from user order by id desc”; $page_res=mysql_query($sql_page); while ($arr=mysql_fetch_array($p