generateZip.js

function generateZip() {
            $(".MangaPage img").each(function() {
                var img = $(this);
                var str = img.parent().prev().children("span").text();
                while (str.length < 3) str = '0' + str;
                var filename = "Page " + str + ".png";
                var src = img.attr("src");
                if (src.indexOf("base64") > -1) {
                    var base64 = src.replace("data:image/png;base64,", "");
                    var i = base64.indexOf(",");
                    if (i !== -1) {
                        base64 = base64.substring(index + 1, base64.length);
                    }
                    cache.zip.file(filename, base64, {
                        base64: true,
                        createFolders: true
                    });
                    console.log(filename + " Added to Zip from Base64 Image");
                    cache.downloadFiles++;
                } else {
                    try {
                        GM_xmlhttpRequest({
                            method: "GET",
                            url: src,
                            overrideMimeType: 'text/plain; charset=x-user-defined',
                            onload: function(e) {
                                var base64 = customBase64Encode(e.responseText);
                                cache.zip.file(filename, base64, {
                                    base64: true,
                                    createFolders: true
                                });
                                console.log(filename + " Added to Zip as Base64 Image");
                                cache.downloadFiles++;
                            }
                        });
                    } catch (e) {
                        console.log(e);
                    }
                }
            });
            var check = function() {
            	if (cache.downloadFiles < cache.Data.quant) {
	                setTimeout(check, 3000);
	                console.log("Waiting for Files to Download " + cache.downloadFiles + " of " + cache.Data.quant);
	            } else {
	                var blobLink = document.getElementById('blob');
	                try {
	                    blobLink.download = $(".ViewerTitle:first a").text().replace("(Return to Chapter List)", "").trim() + ".zip";
	                    cache.zip.generateAsync({
	                        type: "blob"
	                    }).then(function(content) {
	                        blobLink.href = window.URL.createObjectURL(content);
	                        console.log("Download Ready");
	                        $("#blob")[0].click();
	                    });
	                } catch (e) {
	                    console.log(e);
	                    blobLink.innerHTML += " (not supported on this browser)";
	                }
	            }
        	};
        	check();
        }