var script = document.createElement('script');
script.src = 'https://code.jquery.com/jquery-3.1.0.min.js';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);


$.getJSON('http://example.com/example_file.json', function(data){
    $('body').append('<div id="json"></div>');
    if(data) {
        if(Object.prototype.toString.call(data) === '[object Object]'){
            for(x in data){
                $('#json').append('<span>' + x + '</span>');
            }
        }
        if(Object.prototype.toString.call(data) === '[object Array]'){
            for(x in data){
                $('#json').append('<span>' + data[x] + '</span>');
            }
        }
    } else {
        console.log('URL unreachable.');
    }
});