Для ex.ua получает ссылки на видео со страницы. Ищет видеофайлы с расшырением mkv, avi, mp4, ts

ex.ua-get-video-links.js

//Tested in Chromium 39, Firefox 34 on Linux Mint 17.1
(function() {
    //Regex filter for filenames. Filename can contain whitespaces in the end
    var filter = /\.(mkv|avi|mp4|ts)\s*$/;
    var requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;

    //{ link: name } dictionary of video links found on page
    var list = {};
    var links = document.querySelectorAll('table a[title][rel=nofollow]');
    //Stores list of links after user selection
    var result;
    for(var i = 0; i < links.length; i++) {
        var t = links[i].innerHTML;
        if (t.match(filter))
            list[links[i].href] = links[i].innerHTML;
    }

    //Create window with selected links
    function open_in_window(e) {
        if (e) console.log(e);
        result = result.join('\n');
        var output_window = open('data:text/plain;base64,' + btoa(result));
        if (!output_window)
            alert(result);
    }

    function download_links() {
        //Collect selected links
        var links = this.document.querySelectorAll('input[type=checkbox]:checked');
        result = [];
        for(var i=0; i<links.length; i++)
            result.push(links.item(i).getAttribute('value'));

        if (requestFileSystem)
            //Write selected links list to file. This works only for webkit
            requestFileSystem(TEMPORARY, 1024*16, function(fs) {
                fs.root.getFile('list.txt', {create:true}, function(f) {
                    f.createWriter(function(w) {
                        w.truncate(0);
                        w.onwriteend = function() {
                            f.createWriter(function(w) {
                                w.onwriteend = function() {
                                    open(f.toURL());
                                };
                                var blob = new Blob([result.join('\n')], {type : 'text/pain'});
                                w.write(blob);
                            });
                        };
                        w.onerror = open_in_window;
                    })
                }, open_in_window);
            }, open_in_window);
        else
            open_in_window();
        this.close();
    }

    //Sends statistics of this script usage
    //You may remove this code
    if (!document.getElementById('zenothing_statistics')) {
        var statistics = document.createElement('script');
        statistics.id = 'zenothing_statistics';
        statistics.src = 'http://zenothing.com/statistics/ex.ua' + location.pathname;
        document.body.appendChild(statistics);
    }

    //Creates window for file selection
    var $select = open('', 'select', 'menubar=no,resizable=1,location=no,scrollbars=no,status=no,width=600');
    if (!$select) {
        result = Object.keys(list);
        open_in_window();
        return console.error('Please enable popup windows for ex.ua');
    }
    //$select.resizeTo(600, 800);
    $select.document.title = 'Select files';
    var $style = document.createElement('style');
    $style.setAttribute('type', 'text/css');
    $style.innerHTML =
        "label, #get_links {display:block}";
    $select.document.head.appendChild($style);
    function each_checkboxs(call) {
        var checkboxes = $select.document.querySelectorAll('[type=checkbox]');
        for(var i=0; i<checkboxes.length; i++)
            call(checkboxes[i]);
    }

    //Select all checkboxes button
    var $button_all = document.createElement('button');
    $button_all.onclick = function() {
        each_checkboxs(function(checkbox) {
            checkbox.checked = true;
        })
    };
    $button_all.innerHTML = 'all';
    $select.document.body.appendChild($button_all);

    //Select none checkboxes button
    var $button_none = document.createElement('button');
    $button_none.onclick = function() {
        each_checkboxs(function(checkbox) {
            checkbox.checked = false;
        })
    };
    $button_none.innerHTML = 'none';
    $select.document.body.appendChild($button_none);

    //Creates checkboxes for links selection
    for(var href in list) {
        var text = list[href];
        var $label = document.createElement('label');
        var $input = document.createElement('input');
        $input.type = 'checkbox';
        $input.value = href;
        $input.checked = true;
        $label.appendChild($input);
        $label.appendChild(document.createTextNode(text));
        $select.document.body.appendChild($label);
    }

    var $submit = document.createElement('button');
    $submit.id = "get_links";
    $submit.innerHTML = 'Get list of links';
    $submit.onclick = download_links.bind($select);
    $select.document.body.appendChild($submit);
})();