Question

How can I add redirect URL link to JS function (example form action to : session.php) in below code.
I’ve tried with another way code, but it still can’t function.

$(document).ready(function() {
    $("#submit_butt").click(function() {
        var conf = {
            frequency: 5000,
            spread: 5,
            duration: 600
        };
        /* do your AJAX call and processing here...
        ....
        ....
        */
        // this is the call we make when the AJAX callback function indicates a login failure 
        $("#login").vibrate(conf);

        // let's also display a notification
        if($("#errormsg").text() == "")
            $("#loginform").append('<p id="errormsg">Invalid username or password!</p>');       

        // clear the fields to discourage brute forcing :)
        $("#password").val("");
        document.forms['login_form'].elements['username'].focus();
    });
});

Answer 1

You can try this

// similar behavior as an HTTP redirect
window.location.replace("http://stackoverflow.com");

// similar behavior as clicking on a link
window.location.href = "http://stackoverflow.com";

https://developer.mozilla.org/en-US/docs/DOM/window.location

Ref: How to redirect to another webpage in JavaScript/jQuery?