How Can I Unzip Files Asynchronously in a Web Browser Using JavaScript?

// Instantiate a ZipFile and provide a callback for when the ZIP is read.
zipFile = new ZipFile(url, doneReading);

// The doneReading callback is triggered when the ZIP is read and handles the extraction of entries.
function doneReading(zip) {
    extractEntries(zip);
}

// Extract entries from the ZIP file.
function extractEntries(zip) {
    for (var i = 0; i < zip.entries.length; i++) {
        var entry = zip.entries[i];

        // Create an entry info div.
        var entryInfo = "<h4><a>" + entry.name + "</a></h4>\n<div>";

        // Create a unique ID for the accordion panel and inject the extracted content into it.
        var randomId = "id-" + Math.floor((Math.random() * 1000000000));
        entryInfo += "<span class='inputDiv'><h4>Content:</h4><span id='" + randomId +
            "'></span></span></div>\n";
        $("#report").append(entryInfo);

        // Asynchronously extract the entry and pass a callback.
        entry.extract(extractCb(randomId));
    }
}

// Extract callback function to add the extracted content to an accordion on the page.
function extractCb(id) {
    return (function(entryName, entryText){
        var content = entryText.replace(new RegExp( "\n", "g" ), "<br/>");
        $("#"+id).html(content);
        $('#report').accordion('destroy');
        $('#report').accordion({collapsible:true, active:false});
    });
}