ajax jquery simple get request

Question

I am making this simple get request using jquery ajax:

$.ajax({
    url: "https://app.asana.com/-/api/0.1/workspaces/",
    type: 'GET',
    success: function(res) {
        console.log(res);
        alert(res);
    }
});

It's returning an empty string as a result. If i go to this link in my browser, i get:

{"status":401,"error":"Not Authorized"}

which is the expected result. So why isn't it working using ajax? thanks!