JAVASCRIPT LOGIN VALIDATOR NOT EMAIL VALIDATOR

I need 4 scripts if you can make 1 only no problem I will take it alone for different price. I need 4 scripts that must check if given username and password is valid via [login to view URL], [login to view URL], [login to view URL], [login to view URL] or just 1 of them if you can't do the 4 everything must be done using client ip not the server ip (because many fail attempts email providers will ask for capatcha and this makes the scripts useless that's why it have to be client ip not server). after checking process: script will send valid username and password using XHR request or any other method to me, if username and pass is not valid log message and do retry. This script is simple but you need to know what you are doing.