First of all:
var username = $("username").val();
var password = $("password").val();
Should be:
var username = $("#username").val();
var password = $("#password").val();
data: "email="+email+"&username="+username+"&password="+password
Should be:
data: {email: email, "username": username, password: password}
And
$username $_POST["username"];
$password $_POST["username"];
Should be:
$username = $_POST["username"];
$password = $_POST["password"];
1
solved Ajax is not sending data to PHP