原生JS实现Ajax通过POST方式与PHP进行交互的方法示例

?php
   $conn=mysql_connect("localhost","root","root") or die("数据库连接失败".mysql_error());
   mysql_select_db("db_database27",$conn) or die("数据库连接失败".mysql_error());
   mysql_query("set names gb2312");
?>

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
title>通过POST方式与PHP进行交互/title>
style type="text/css">
!--
body {
  margin-left: 0px;
  margin-top: 00px;
  margin-right: 0px;
  margin-bottom: 0px;
}
-->
/style>/head>
script>
var xmlHttp;                  //定义XMLHttpRequest对象
function createXmlHttpRequestObject(){
    if(window.ActiveXObject){          //如果在internet Explorer下运行
      try{
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }catch(e){
        xmlHttp=false;
      }
    }else{
      try{                  //如果在Mozilla或其他的浏览器下运行
        xmlHttp=new XMLHttpRequest();
      }catch(e){
        xmlHttp=false;
      }
    }
    if(!xmlHttp)                //返回创建的对象或显示错误信息
      alert("返回创建的对象或显示错误信息");
    else
      return xmlHttp;
}
function showsimple(){               //创建主控制函数
  createXmlHttpRequestObject();
  var us = document.getElementById("user").value;   //获取表单提交的值
  var nu = document.getElementById("number").value;
  var ex = document.getElementById("explains").value;
  if(us==""  nu==""  ex==""){         //判断表单提交的值不能为空
    alert('添加的数据不能为空！');
    return false;
  }
  var post_method="users="+us+"numbers="+nu+"explaines="+ex;    //构造URL参数
  xmlHttp.open("POST","searchrst.php",true);           //调用指定的添加文件
  xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");  //设置请求头信息
  xmlHttp.onreadystatechange=StatHandler;     //判断URL调用的状态值并处理
  xmlHttp.send(post_method);           //将数据发送给服务器
}
function StatHandler(){               //定义处理函数
  if(xmlHttp.readyState==4  xmlHttp.status==200){    //判断如果执行成功，则输出下面内容
    if(xmlHttp.responseText!=""){
      alert("数据添加成功！");
      //将服务器返回的数据定义到DIV中
      document.getElementById("webpage").innerHTML=xmlHttp.responseText;
    }else{
      alert("添加失败！");           //如果返回值为空
    }
  }
}
/script>
body>
table width="800" height="632" border="0" align="center" cellpadding="0" cellspacing="0" background="images/bj.jpg">
 tr>
  td width="260" height="245">nbsp;/td>
  td colspan="2" align="center" valign="bottom">strong>查询员工信息，根据员工技能信息/strong>/td>
  td width="40">nbsp;/td>
 /tr>form id="searchform" name="searchform" method="post" action="#">
 tr>
  td height="25">nbsp;/td>
  td width="150" align="right">员工姓名：   /td>
  td width="350" align="left">input name="user" type="text" id="user" size="30" />/td>
  td>nbsp;/td>
 /tr>
 tr>
  td height="25">nbsp;/td>
  td align="right">员工编号：   /td>
  td align="left">input name="number" type="text" id="number" size="20" />/td>
  td>nbsp;/td>
 /tr>
 tr>
  td height="25">nbsp;/td>
  td align="right">技能描述：   /td>
  td align="left">textarea name="explains" cols="40" rows="3" id="explains">/textarea>/td>
  td>nbsp;/td>
 /tr>
 tr>
  td height="25">nbsp;/td>
  td colspan="2" align="center">
  input type="button" name="Submit" value="提交" onclick="showsimple();" />nbsp;nbsp;
  input type="reset" name="Submit2" value="重置" />/td>
  td>nbsp;/td>
 /tr> /form>
 tr>
  td height="268">nbsp;/td>
  td colspan="2" align="center" valign="top">div id="webpage">/div>/td>
  td>nbsp;/td>
 /tr>
 tr>
  td>nbsp;/td>
  td colspan="2">nbsp;/td>
  td>nbsp;/td>
 /tr>
/table>
/body>
/html>

?php
  header('Content-type: text/html;charset=GB2312');      //指定发送数据的编码格式
  include_once 'conn/conn.php';                //连接数据库
  $user =iconv('UTF-8','gb2312',$_POST['users']);       //获取Ajax传递的值,并实现字符编码转换
  $number = iconv('UTF-8','gb2312',$_POST['numbers']);    //获取Ajax传递的值,并实现字符编码转换
  $explains = iconv('UTF-8','gb2312',$_POST['explaines']);  //获取Ajax传递的值,并实现字符编码转换
  $sql="insert into tb_administrator(user,number,explains)values('$user','$number','$explains')";
  $result=mysql_query($sql,$conn);            //执行添加语句
  if($result){
    $sqles="select * from tb_administrator ";
    $results=mysql_query($sqles,$conn);
    echo "table width='500' border='1' cellpadding='1' cellspacing='1' bordercolor='#FFFFCC' bgcolor='#666666'>";
    echo "tr>td height='30' align='center' bgcolor='#FFFFFF'>ID/td>td align='center' bgcolor='#FFFFFF'>名称/td>td align='center' bgcolor='#FFFFFF'>编号/td>td align='center' bgcolor='#FFFFFF'>描述/td>/tr>";
    while($myrow=mysql_fetch_array($results)){     //循环输出查询结果
      echo "tr>td height='22' bgcolor='#FFFFFF'>".$myrow[id]."/td>";
      echo "td bgcolor='#FFFFFF'>".$myrow[user]."/td>";
      echo "td bgcolor='#FFFFFF'>".$myrow[number]."/td>";
      echo "td bgcolor='#FFFFFF'>".$myrow[explains]."/td>";
      echo "/tr>";
    }
    echo "/table>";
  }
?>