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     <script type="text/javascript">
                (function() {
                    // Only do anything if jQuery isn't defined
                    if (typeof jQuery == 'undefined') {

                        if (typeof $ == 'function') {
                            // warning, global var
                            thisPageUsingOtherJSLibrary = true;
                        }

                        function getScript(url, success) {

                            var script = document.createElement('script');
                            script.src = url;

                            var head = document.getElementsByTagName('head')[0],
                            done = false;

                            // Attach handlers for all browsers
                            script.onload = script.onreadystatechange = function () {

                                if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) {

                                    done = true;

                                    // callback function provided as param
                                    success();

                                    script.onload = script.onreadystatechange = null;
                                    head.removeChild(script);

                                };

                            };

                            head.appendChild(script);

                        };

                        getScript('https://code.jquery.com/jquery-2.1.1.min.js', function () {

                            if (typeof jQuery == 'undefined') {

                                // Super failsafe - still somehow failed...

                            } else {

                                // jQuery loaded! Make sure to use .noConflict just in case
                                fancyCode();

                                if (thisPageUsingOtherJSLibrary) {

                                    // Run your jQuery Code

                                } else {

                                    // Use .noConflict(), then run your jQuery Code

                                }

                            }

                        });

                    } else { // jQuery was already loaded

                        // Run your jQuery Code

                    };
                })
            </script>