is it safe to pass data via ajax?

Question

i created script which will count child\'s div for some certain div with this command

$(\'#content\').children().size()

by this count i know to

Answer 1

check this link,it's can be useful

• check for authentication and authorization
• Encrypt or add salted hash checks to data exported to the browser for resubmission
• treat any data received in the request as potentially dangerous
• use HTTPS where its appropriate
• transform data leaving your PHP using the right method for were its going (htmlentities, mysql_real_escape_string
• transform data entering your script using the right method based on its origin (e.g. json_decode)

Answer 2

As per my comment, once more as answer.

'Safe' is relative. Basically AJAX is nothing but a plain HTTP request based on JavaScript. So it's not any more or less safe than one like that. To make it 'safe' you could use HTTPS to encrypt the connection. That way, you should be able to prevent injection and stuff. Regarding the cheating...if one really wants to, he can. The only thing you can do, is to check the parameters carefully and therefore detect irregularities. Maybe add a hidden checksum, which only allows for particular options.