responseText contains extra whitespace characters (new lines, line feeds), how to prevent and remove them?

Question

I have an ajax script that calls a php file.

The php file echos \"yes\" or \"no\", I want to use the strings to do logical comparisons.

In the javascript,

Answer 1

I think you may be going at it the wrong way. Instead of manually trying to create a response why don´t you use PHP arrays as a data structure and JSON for delivery?

 $flag)
$json = json_encode($arr);

// See http://www.geekality.net/2010/06/27/php-how-to-easily-provide-json-and-jsonp/
// Set JSONP header
header('content-type: application/json; charset=utf-8');

// Get callback from $_GET and prepend the JSON data
echo isset($_GET['callback'])
    ? "{$_GET['callback']}($json)"
    : $json;