var getProviderInfo = function (provider) 
{

    return new Promise(function (resolve, reject) {
        
        var time = ~~(Math.random() * 2000) + 2000;
        // Make request and get the data, simulate request api, no fail in our case
        window.setTimeout(function () {
            
            return resolve({ data: provider + " success in " + time });
                        
        }, time);   
    });
};

var providers = [
    getProviderInfo("facebook"),
    getProviderInfo("google"),
    getProviderInfo("linkedin"),
    getProviderInfo("twitter"),
];

var handleResult = function (result)
{
    console.log("All the promises are resolved now we have data");
    console.log("Result", result);
};

Promise.all(providers).then(handleResult);