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)