AJAX请求不正确[关闭]

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                    <p class="mb0 mt6">Closed <span title="2014-04-10 21:25:25Z" class="relativetime">6 years ago</span>.</p>
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I'm a newbie to AJAX. I want to write value of radio button in a file through JavaScript, which is not possible according to my search. For that purpose, I'm sending an AJAX request to a function of php. Following is my AJAX request.

 $.ajax({
     url: "/modules/orffinder/write_file",
     type: "POST",
     data: "id=radios[i].value",
     success: function(msg){
     alert(msg);
     window.opener.runNextModule (msg);
 }
 });

My php function is

function write_file()
{
    $id = $_POST['id'];
    echo "The id is ".$id;
    $myFile = "/var/www/Bioinfo12/testFile.txt";
    $fh = fopen($myFile, 'w') or die("can't open file");
    fwrite($fh, $id);
    fclose($fh);
 }

but the problem with this code is that it does not run at all, may be its a syntax error. How to get out of this problem?

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Answer 1

You cannot use var in " " in js,You shoule do like this:

data: "id="+radios[i].value

You can see your error in browser consle, for example F12 in chrome.

There are some reasons :

1.the url is not right "module/xxxx" is diffrent from "/module/xxxx"

2.the php script occur error.

So you can get infomation from browser, to see is 404, or the php return error info

Oh... in php:

echo "The id is ".id;

shoule be :

echo "the id is ". $id