drop_table($table_name[, $if_exists = FALSE])

symbolic_permissions($perms)

hkdf($key[, $digest = 'sha512'[, $salt = NULL[, $length = NULL[, $info = '']]]])

db_set_charset($charset)

validation_errors([$prefix = ''[, $suffix = '']])

rename_table($table_name, $new_table_name)

convert_ascii($str)

anchor($uri = '', $title = '', $attributes = '')

reset_query()

CodeIgniter provides a library to help you with certain common functions that you may want to use with Javascript. Please note that CodeIgniter does not require the jQuery