[js][ff][bookmark][youtube][yt] Firefox Bookmarklet Youtube Image

gistfile1.js

/*
// -> http://stackoverflow.com/questions/10113366/load-jquery-with-javascript-and-use-jquery
// -> http://muaz-khan.blogspot.de/2012/10/save-files-on-disk-using-javascript-or.html
// -> http://stackoverflow.com/questions/5404839/how-can-i-refresh-a-page-with-jquery/7609411#7609411
*/

(function() {
    var getUriParamByName = function(name, href) {
        name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
        var regexS = "[\\?&]"+name+"=([^&#]*)";
        var regex = new RegExp( regexS );
        var results = regex.exec( href );
        if( results == null ) {
            return "";
        } else {
            return decodeURIComponent(results[1].replace(/\+/g, " "));
        }
    };
    
    var doYouTubeMojo = function() {
        /*
        window.alert("locationl.host=" + location.host);
        window.alert("document.domain="+document.domain);
        */
        if (location.host.indexOf("youtube.com")!=-1) {
            $.ajax({
                url: "",
                context: document.body,
                success: function(html,state){
                    /*$(this).html(html);*/
                    var page = $(html);
                    var imgUri = page.filter("meta[property='og:image']").prop("content");
                    /*= page.filter("meta[name='twitter:image']").attr("content");*/
                    var imgTitle = page.filter("meta[property='og:title']").prop("content");
                    var imgFilename = imgTitle + imgUri.substring(imgUri.lastIndexOf("."));
                    
                    window.alert("imgUri:\n\t" + imgUri + "\n\nimgTitle:\n\t" + imgTitle + "\n\nimgFilename:\n\t" + imgFilename);
                    
                    var save = document.createElement('a');
                    save.href = imgUri;
                    save.target = '_blank';
                    save.download = imgFilename || 'unknown';
                    
                    var evt = document.createEvent('MouseEvents');
                    evt.initMouseEvent('click', true, true, window, 1, 0, 0, 0, 0, false, false, false, false, 0, null);
                    save.dispatchEvent(evt);
                    (window.URL || window.webkitURL).revokeObjectURL(save.href);
                }
            });
        }
    };
    
    var loadJQuery = function() {
        var startingTime = new Date().getTime();
    
        var script = document.createElement("SCRIPT");
        script.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js';
        script.type = 'text/javascript';
        document.getElementsByTagName("head")[0].appendChild(script);
    
        var checkReady = function(callback) {
            if (window.jQuery) {
                callback(jQuery);
            } else {
                window.setTimeout(function() { checkReady(callback); }, 20);
            }
        };
        
        checkReady(function($) {
            $(function() {
                var endingTime = new Date().getTime();
                var tookTime = endingTime - startingTime;
                window.alert("jQuery is loaded, after " + tookTime + " milliseconds!");
                
                doYouTubeMojo();
            });        
        });        
    };
    
    if (window.jQuery) {
        window.alert("has jQuery already");
        doYouTubeMojo();
    } else {
        window.alert("inject jQuery");
        loadJQuery();
    }
    
})();

gistfile2.txt

javascript:(function(){var%20a=function(){if(location.host.indexOf("youtube.com")!=-1){$.ajax({url:"",context:document.body,success:function(c,h){var%20page=$(c);var%20b=page.filter("meta[property='og:image']").prop("content");var%20d=page.filter("meta[property='og:title']").prop("content");var%20e=d+b.substring(b.lastIndexOf("."));window.alert("imgUri:\n\t"+b+"\n\nimgTitle:\n\t"+d+"\n\nimgFilename:\n\t"+e);var%20f=document.createElement('a');f.href=b;f.target='_blank';f.download=e||'unknown';var%20g=document.createEvent('MouseEvents');g.initMouseEvent('click',true,true,window,1,0,0,0,0,false,false,false,false,0,null);f.dispatchEvent(g);(window.URL||window.webkitURL).revokeObjectURL(f.href)}})}};var%20l=function(){var%20i=new%20Date().getTime();var%20h=document.createElement("SCRIPT");h.src='https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js';h.type='text/javah';document.getElementsByTagName("head")[0].appendChild(h);var%20m=function(callback){if(window.jQuery){callback(jQuery)}else{window.setTimeout(function(){m(callback)},20)}};m(function($){$(function(){var%20j=new%20Date().getTime();var%20k=j-i;window.alert("jQuery%20is%20loaded,%20after%20"+k+"%20milliseconds!");a()})})};if(window.jQuery){a()}else{l()}})();

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