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(function($) { var isGoogleFont = function (element) { // google font download if (element.href && element.href.indexOf('https://fonts.googleapis.com') === 0) { return true; } return false; } // we override these methods only for one particular head element // default methods for other elements are not affected var head = $('head')[0]; var insertBefore = head.insertBefore; head.insertBefore = function (newElement, referenceElement) { if (!isGoogleFont(newElement)) { insertBefore.call(head, newElement, referenceElement); } }; var appendChild = head.appendChild; head.appendChild = function (textNode) { if (!isGoogleFont($(textNode)[0])) { appendChild.call(head, textNode); } }; })(jQuery);