plug.dj getId

function getId(username) {
    username = username.substr(1);
    var users = API.getUsers();
    for (var i = 0; i < users.length; i++) {
        if (users[i].username===username) {
            return users[i].id;
        }
    };
    return false;
}

API.on(API.CHAT_COMMAND, function (value) {
    valuearray = value.substr(1).split(' ');
    command = valuearray[0];
    param = valuearray.slice(1).join(' ').trim();

    if (command==="id") {
        var id = getId(param);
        if (id) {
            API.chatLog("ID of " + param + ": " + id.toString());
        } else {
            API.chatLog("user " + param + " not found");
        }

    }
});