var 内的函数作用域

Question

我正在尝试访问函数 createLocalAccount 中的变量 email 和 password，我该如何维护代码结构？

var createLocalAccount = function(response) {
    return localDb.put('login', {
        uid: response.uid,
        email: email,
        password: password
    });
};

this.createAccount = function(firstName, lastName, email, password) {
    var deferred = $q.defer();
    createAccount(email, password)
        .then(createLocalAccount);
    return deferred.promise;
}

Answer 1

将其传递给函数：

var createLocalAccount = function(email, password, response) {
    return localDb.put('login', {
        uid: response.uid,
        email: email,
        password: password
    });
};

this.createAccount = function(firstName, lastName, email, password) {
    return createAccount(email, password)
        .then(function(response) {
            return createLocalAccount(email, password, response);
        });
}