Getting the First Name, Last Name and User ID through the VK API - how to implement?

Question

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It is required to get the user id (well, first name / last name). The VK API is initialized normally, here is the code for the https://vk.com/dev/account.getProfileInfo method

VK.api("account.getProfileInfo", function (data) {
                alert("Info: " + data.first_name + " " + data.last_name + " " + data.id);
                console.log("Info: " + data.first_name + " " + data.last_name + " " + data.id);
                returnStr = data.id;
            });

Everywhere (both in the alert and in the console) returns "Info: undefined undefined undefined".
What is wrong, or how to get the right data?

Answer 1

Solution - code to get ID

VK.api("users.get", {"v":"5.124"}, function (data) {
                var id = data["response"][0]["id"];
                returnStr = id;
            });

Important - it is necessary that the state of the application be "The application is enabled and visible to everyone."

Answer 2

This method can be called with a user access key obtained in the Standalone application via Implicit Flow.