Home Backend Development PHP Tutorial php Ajax Post GET传值

php Ajax Post GET传值

Jun 23, 2016 pm 02:33 PM

用Ajax 进行Post传值

以下程序已调试通过:

Untitled Document

function saveUserInfo()

//获取接受返回信息层

var msg = document.getElementByIdx_x("msg");

//获取表单对象和用户信息值

var f = document.user_info;

var userName = f.user_name.value;

var userAge    = f.user_age.value;

var userSex    = f.user_sex.value;

//接收表单的URL地址

var url = "/ajax_output.php";

//需要POST的值,把每个变量都通过&来联接

var postStr    = "user_name="+ userName +"&user_age="+ userAge +"&user_sex="+ userSex;

//实例化Ajax

//var ajax = InitAjax();

                var ajax = false;

              //开始初始化XMLHttpRequest对象

              if(window.XMLHttpRequest) { //Mozilla 浏览器

                          ajax = new XMLHttpRequest();

                          if (ajax.overrideMimeType) {//设置MiME类别

                                      ajax.overrideMimeType("text/xml");

                          }

              }

              else if (window.ActiveXObject) { // IE浏览器

                          try {

                                      ajax = new ActiveXObject("Msxml2.XMLHTTP");

                          } catch (e) {

                                      try {

                                                  ajax = new ActiveXObject("Microsoft.XMLHTTP");

                                      } catch (e) {}

                          }

              }

              if (!ajax) { // 异常,创建对象实例失败

                          window.alert("不能创建XMLHttpRequest对象实例.");

                          return false;

              }

                        

                        

                        

//通过Post方式打开连接

ajax.open("POST", url, true);

//定义传输的文件HTTP头信息

ajax.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

//发送POST数据

ajax.send(postStr);

//获取执行状态

ajax.onreadystatechange = function() { 

     //如果执行状态成功,那么就把返回信息写到指定的层里

     if (ajax.readyState == 4 && ajax.status == 200) { 

       msg.innerHTML = ajax.responseText; 

     } 

姓名:

年龄:

性别:

以上页面存为ajax.php

然后再建 一个PHP文件,ajax_output.php

        echo $_POST['user_name'];

        echo $_POST['user_age'];

        echo $_POST['user_sex'];

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