SyntaxError: JSON.parse: unexpected character at line 1 column 1 of th

[oligalma]

I'm writing a Joomla component and I'm trying to do ajax request but I always get this error (SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data). I cannot understand, as I'm sure the response is JSON:

$response = array();
// ...
echo json_encode($response);

<snip>

[edited by: ergophobe at 8:52 pm (utc) on Feb 15, 2016]
[edit reason] Please no URLs to personal sites [/edit]

[ergophobe]

The unexpected character is line 1, col 1, so it should be the first character in the string you're sending to be parsed as JSON
- is it a legal character?
- is it possibly a hidden control character?

Can you dump the data before attempting to parse it and then check it against a JSON validator (JSLint or what have you)?

[oligalma]

Finally I could fix the error! It's weird, I had to add "format=raw" to the ajax url:

 jQuery.ajax({
   data: {letter: jQuery(this).text()},
   type: "POST",
   dataType: "json",
   url: "index.php?option=com_hangman&task=guess&format=raw"
});

[ergophobe]

Glad you got it sorted!

(and thanks for the tip)