Express JS How to Set and Destroy Cookies (Explain Like I'm 5)

cookie.js

app.get("/setcookie", function(req, res){

    let cookieOptions = {
        maxAge: 1000 * 60 * 100,
        httpOnly: true,
        signed: true
    }

    res.cookie("test", new Date().getTime(), cookieOptions);

    if(req.signedCookies["test"]){
        console.log(req.signedCookies["test"]);
    }else{
        console.log("nah");
    }
    
    console.log("-----");
    res.send("done");
});

app.get("/cleancookie", function(req, res){
    res.clearCookie("test");

    if(req.signedCookies["test"]){
        console.log(req.signedCookies["test"]);
    }else{
        console.log("nah");
    }

    res.send("done");
});