callback that returns a local variable

I'm struggling with creating a method that should return an array, but for some reason, the returned value is empty. I suspect it's because the return statement is executed before the local variable is properly set. Perhaps I am approaching this from the wrong angle. Does anyone have any suggestions on the best practice or pattern to achieve this? See code snippet below.

// THE JAVASCRIPT METHOD IN QUESTION
this.getAllMediaTypes = function() {
    // DECLARATION OF LOCAL VARIABLE
    var allMediaArr = [];
    // API CALL TO FETCH DATA
    _thisObj.apiCall(_dataUrl + '/media.json?max=' + _thisObj.maxRecords +'&callback=?', function(){
        allMediaArr = _apiData.results;
        console.log(allMediaArr); //THE CONSOLE LOG SHOWS THE CORRECT DATA
    });
    // DESIRED RETURN VALUE 
    return allMediaArr; // HOWEVER, THIS IS RETURNING EMPTY       
}

Answer №1

Consider changing your approach from making an asynchronous call to the API to a synchronous one for better performance.

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