$.ajax({type:"POST",data:JSON.stringify({ "username": "username","password":"password"}),url:"http://localhost/login"}).done(function(data) {
    alert( data );
  }).fail(function(data) {
    console.log("fail");
    console.log(data);
  });

router.post('/login', passport.authenticate('local'),function(req,res){
res.send("success");
});

passport.use(new LocalStrategy(
    {passReqToCallback: true},
    function(req,username, password, done) {
         //console.log(req);
        if(username=="adisak"){
           return done(null,{adisak:"hi"});
        }
    return done(null,false);

  }
));