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javascript promise not passing all arguments (using Q)

I am having trouble passing all arguments. My promise callback only receives one instead of three:

var asyncFunction= function(resolve) {
    setTimeout(function() {
        resolve("Some string that is passed", "and another", "third");
    }, 1000);
};

var promiseFunction = function () {
    var deferred = Q.defer();

    asyncFunction(deferred.resolve);

    return deferred.promise;
};

promiseFunction().then(function() {
    // Only one argument is passed here instead of 3
    // { '0': 'Some string that is passed' }
    console.log(arguments); 
});

Any idea what I am doing wrong?

like image 712
Nick Avatar asked Jul 31 '13 12:07

Nick


1 Answers

Q promises can be resolved with only one argument - a promise stands for one single value, not for a collection of them. Put them in an array explicitly if you need multiple values. For the multiple-parameter-callbacks, you can use .spread().

like image 104
Bergi Avatar answered Nov 04 '22 00:11

Bergi