Return a value from an asynchronous function.

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Javascript

Hi,

This is what I have as my code in js,

var dataset = testgettingdataset(sensorType, chart);

    function testgettingdataset(sensorType, chart) {

        var dataset = [];

        var successCallback = function (data) {
            dataset = JSON.parse(data);  // dataset is defined
        };

        var checkdataset = dataset;   // dataset is an empty array

        return dataset;
    }

Here I want to return my dataset variable. But when I came outside the successcallback the dataset is empty.

Can anyone help me with this?

What I have tried:

I have tried to return the value even inside the

var successCallback = function (data) {
            dataset = JSON.parse(data);  // dataset is defined
        };