dongwai4434 2013-01-17 02:31 采纳率: 0%
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responseText没有显示任何内容

I'm playing around a little with Ajax and i'm using the following code.

var r = new XMLHttpRequest();
r.open("POST", "pythonTesting.php", true);
r.onreadystatechange = function () {
    if (r.readyState === 4 && r.status === 200) {
        alert("Success: " + r.responseText);
    }
};
r.send("text=yellow");

It is successful but the alert isn't showing the actual responseText.

pythonTesting.php (not to be confused by the name) is just:

 <?php
   echo $_POST['text'];
 ?>

I'm expecting the responseText to be yellow because that's how I sent it but its not. I'm not really seeing what the problem is though. It must be one of those easy to fix mistakes.

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  • duangan6636 2013-01-17 03:06
    关注

    from http://www.w3schools.com/ajax/ajax_xmlhttprequest_send.asp:

    xmlhttp.open("POST","ajax_test.asp",true);
    xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
    xmlhttp.send("fname=Henry&lname=Ford");
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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