我正在使用post方法发出请求。我无法找到响应文本的值。可能是我缺乏如何获得响应文本的知识。如果数据库中存在数据,我试图告诉用户他能够发布数据,否则他将收到一个警告,他需要更改名称。 这是我的ajax电话: - function checkAddedNew(univ_name,term_no,dept_name,uid,year) {
var getName=document.getElementById("add_new_name").value;
var getTitle=document.getElementById("add_new_title").value;
var hasSpace=getTitle.indexOf(' ');
if(hasSpace >= 0)
{
alert("Please fill up the title without space");
}
else
{
if(getName&& getTitle)
{
var r=confirm("Do you want to add?");
}
else if(!getName && getTitle)
{
alert("Please fill up the name");
}
else if(getName && !getTitle)
{
alert("Please fill up the title");
}
else
{
alert("Please fill up the form.");
}
if (r==true )
{
var xmlhttp;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
alert(http.responseText);
location.reload();
}
}
xmlhttp.open("POST","../addnew/check",true);
xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xmlhttp.send("title="+getTitle+"&name="+getCourseName+"&name="+univ_name+"&term_no="+term_no+"&department_name="+dept_name+"&uid="+uid+"&year="+year);
}
}
}
我在这里收到回复xmlhttp.readyState == 4&& xmlhttp.status == 200。这是我的控制器: -
function check()
{
$title = $this->input->post('title');
$name=$this->input->post('name');
$university_name=$this->input->post('university_name');
$term_no=$this->input->post('term_no');
$department_name=$this->input->post('department_name');
$uid = $this->input->post('uid');
$year=$this->input->post('year');
$CI =& get_instance();
$log_username=$CI->session->userdata('username');
$now = time();
$human = unix_to_human($now);
$this->load->model('model');
$isUnique=$this->model->checkNew($name,$title,$log_username,$human,$term_no,$university_name,$year,$department_name,$uid);
if($isUnique)
{
$this->course_model->insertNewCourse($course_name,$course_title,$log_username,$human,$term_no,$university_name,$year,$department_name,$uid);
}
}
答案 0 :(得分:0)
未定义变量http
,它应为xmlhttp
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
alert(xmlhttp.responseText);
//or
//alert(this.responseText);
location.reload();
}
}
答案 1 :(得分:0)
您有alert(http.responseText);
,但您从未定义http
。您的对象名为xmlhttp
。