Humble Bundle Renamer - jQuery

// Create an array to store our batch file lines
var output = [];

// Build the array
$('.js-all-downloads-holder .whitebox-redux .row').each(function(){
    // Get name
    var name = $(this).find('.gameinfo .title a:first-child').text().trim();

    // Replace illegal characters (you can change the "" in the second parameter to whatever you like, as with the first line)
    name = name.replace(":", " -");
    name = name.replace("?", "");
    name = name.replace("*", "");
    name = name.replace("|", "");

    // Get filenames & add them to the output array
    $(this).find('.downloads .download .a').each(function() {
        // Get single link URL
        var url = $(this).attr('href');

        // Remove the query string from the URL
        var urlQueryIndex = url.indexOf('?');
        var urlSliced = url.slice(0, urlQueryIndex);

        // Remove the domain path
        var filename = urlSliced.replace("https://dl.humble.com/", "");

        // Get the file extension (".pdf", etc)
        var extensionIndex = urlSliced.lastIndexOf('.');
        var extension = url.slice(extensionIndex, urlSliced.length);

        // Batch file renaming convention is "rename [old filename] [new filename]"
        var oldFilename = filename;
        var newFilename = name + extension;
        var batLine = 'rename ' + oldFilename + ' "' + newFilename + '"';
        output.push(batLine);
    });
});

// Create an empty textarea, and usage instructions
$('.js-all-downloads-holder .whitebox-redux').prepend('<div style="margin-bottom: 20px;font-size: 18px;line-height: 25px;"><strong>Batch Renamer Instructions:</strong><ol><li>Copy and paste the text below into an empty text file named "renamer.txt"</li><li>Rename this file to "renamer.bat" (without quotes)</li><li>Put the file into a folder with all of your downloaded files (be sure to make backups first, just in case!)</li><li>Double-click the .bat file, and your files will be renamed!</li></ol></div><textarea class="batch-file-output" style="width: 100%; min-height: 500px;margin-bottom: 20px;"></textarea>');

// Output the array to the textarea
$.each(output, function(index, value) {
    console.warn(value);
    $('.batch-file-output').append(value + "\n");
});