Simple AlphaVantage.co jQuery API example

/**
 *
 * AlphaVantage.co simple jQuery API demo
 * API Documentation: https://www.alphavantage.co/documentation/
 *
 */
jQuery(document).ready(function($) {
    // AlphaVantage.co API Key - get your own from https://www.alphavantage.co/support/#api-key and replace `demo` below
    var apiKey = 'demo';

    // Define stock symbol
    var symbol = 'BABA';

    // Build request URL
    var requestUrl = 'https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=' + symbol + '&apikey=' + apiKey;

    // Get JSON-formatted data from the AlphaVantage.co API (AJAX request)
    $.getJSON( requestUrl, function( response ) {
        if ( response.Information ) {
            // Handle wrong API key response
            console.log(response.Information);
        } else if (response["Error Message"]) {
            // Handle error responses
            console.log(response["Error Message"]);
        } else {
            // Get last refreshed date
            var lastRefreshed = response["Meta Data"]["3. Last Refreshed"];
            // Get time series object
            var timeSeries = response["Time Series (Daily)"];
            // Get last item series
            var lastData = timeSeries[Object.keys(timeSeries)[0]];
            // Get stock close from object
            var close = lastData["4. close"];
            // Output message to console
            console.log(symbol + ' ' + close + ' (Last Refreshed at ' + lastRefreshed + ')');
        }
    });
});