Question

I am trying to get a string from a text file. I have a php file called genjsonGPS.php that looks like this:

<?php

$myFile = "vesselGPS.txt";
$fh = fopen($myFile, 'r');
$vesselGPS = fread($fh, filesize($myFile));
fclose($fh);

echo("Hello");


?>

When I run it, I get for an output in my browser:

“Hello”

I have a webpage with a js file using microAjax (from the js file):

microAjax("genjsonGPS.php", function (res) {
  alert (res);
});

When I run the webpage I get a blank alert. When I change the function above to:

microAjax("genjsonGPS.php", function (res) {
  alert (res.toString);
});

I get an alert that says:
function toString() { [native code] }

How do I get the function above to output “Hello” in the alert like the browser does?

Answer 1

Please follow these tips.

• Monitor your HTTP server’s access log, something like tail -f /var/log/apache/access.log is helpful. (Assume you are working on *nix platform)

• If you are using Chrome, please check out the network monitor panel.

You’d better make sure that:

• Your php page is truly accessed.
• There is no error occurs, both in server and client sides.

If you still cannot figure out where things goes wrong, if would be useful to let people know how microAjax is implemented.