下面是一个将文件导出为ZIP的教程:

在开始之前，有一个库来保存文件，库的名字是filesver .js，你可以在这里找到这个库。让我们开始吧，现在，包括所需的库:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.4/jszip.min.js"  type="text/javascript"></script>
<script type="text/javascript" src="https://fastcdn.org/FileSaver.js/1.1.20151003/FileSaver.js" ></script>

现在复制这段代码，这段代码将下载一个带有Hello .txt文件的zip文件，其中包含Hello World的内容。如果一切正常，这将下载一个文件。

<script type="text/javascript">
    var zip = new JSZip();
    zip.file("Hello.txt", "Hello World\n");
    zip.generateAsync({type:"blob"})
    .then(function(content) {
        // see FileSaver.js
        saveAs(content, "file.zip");
    });
</script>

这将下载一个名为file.zip的文件。你可以在这里阅读更多:http://www.wapgee.com/story/248/guide-to-create-zip-files-using-javascript-by-using-jszip-library

这个线程对于如何生成二进制文件并提示下载已命名的文件非常有价值，所有这些都在客户机代码中，没有服务器。

我的第一步是从我保存的数据中生成二进制blob。对于单个二进制类型有很多示例，在我的例子中，我有一个具有多个类型的二进制格式，您可以将其作为数组传递来创建blob。

saveAnimation: function() {

    var device = this.Device;
    var maxRow = ChromaAnimation.getMaxRow(device);
    var maxColumn = ChromaAnimation.getMaxColumn(device);
    var frames = this.Frames;
    var frameCount = frames.length;

    var writeArrays = [];


    var writeArray = new Uint32Array(1);
    var version = 1;
    writeArray[0] = version;
    writeArrays.push(writeArray.buffer);
    //console.log('version:', version);


    var writeArray = new Uint8Array(1);
    var deviceType = this.DeviceType;
    writeArray[0] = deviceType;
    writeArrays.push(writeArray.buffer);
    //console.log('deviceType:', deviceType);


    var writeArray = new Uint8Array(1);
    writeArray[0] = device;
    writeArrays.push(writeArray.buffer);
    //console.log('device:', device);


    var writeArray = new Uint32Array(1);
    writeArray[0] = frameCount;
    writeArrays.push(writeArray.buffer);
    //console.log('frameCount:', frameCount);

    for (var index = 0; index < frameCount; ++index) {

      var frame = frames[index];

      var writeArray = new Float32Array(1);
      var duration = frame.Duration;
      if (duration < 0.033) {
        duration = 0.033;
      }
      writeArray[0] = duration;
      writeArrays.push(writeArray.buffer);

      //console.log('Frame', index, 'duration', duration);

      var writeArray = new Uint32Array(maxRow * maxColumn);
      for (var i = 0; i < maxRow; ++i) {
        for (var j = 0; j < maxColumn; ++j) {
          var color = frame.Colors[i][j];
          writeArray[i * maxColumn + j] = color;
        }
      }
      writeArrays.push(writeArray.buffer);
    }

    var blob = new Blob(writeArrays, {type: 'application/octet-stream'});

    return blob;
}

下一步是让浏览器提示用户使用预定义的名称下载这个blob。

我所需要的只是在HTML5中添加一个命名链接，我可以重用它来重命名初始文件名。我把它隐藏起来，因为这个链接不需要显示。

<a id="lnkDownload" style="display: none" download="client.chroma" href="" target="_blank"></a>

最后一步是提示用户下载文件。

var data = animation.saveAnimation();
var uriContent = URL.createObjectURL(data);
var lnkDownload = document.getElementById('lnkDownload');
lnkDownload.download = 'theDefaultFileName.extension';
lnkDownload.href = uriContent;
lnkDownload.click();

您可以使用localStorage。这相当于Html5中的cookie。它似乎可以在Chrome和Firefox上运行，但在Firefox上，我需要将它上传到服务器上。也就是说，直接在我的家用电脑上测试不起作用。

我正在做HTML5的例子。访问http://faculty.purchase.edu/jeanine.meyer/html5/html5explain.html 转到迷宫一。重建迷宫的信息使用localStorage存储。

我读这篇文章是为了寻找用于加载和处理xml文件的HTML5 JavaScript。它是否与旧的html和JavaScript相同????

这里有一个链接到Mathew建议的数据URI方法，它在safari上工作，但不是很好，因为我不能设置文件类型，它被保存为“未知”，然后我不得不再次去那里，改变它，以便查看文件…

http://www.nihilogic.dk/labs/canvas2image/

保存大文件

Long data URIs can give performance problems in browsers. Another option to save client-side generated files, is to put their contents in a Blob (or File) object and create a download link using URL.createObjectURL(blob). This returns an URL that can be used to retrieve the contents of the blob. The blob is stored inside the browser until either URL.revokeObjectURL() is called on the URL or the document that created it is closed. Most web browsers have support for object URLs, Opera Mini is the only one that does not support them.

强制下载

If the data is text or an image, the browser can open the file, instead of saving it to disk. To cause the file to be downloaded upon clicking the link, you can use the the download attribute. However, not all web browsers have support for the download attribute. Another option is to use application/octet-stream as the file's mime-type, but this causes the file to be presented as a binary blob which is especially user-unfriendly if you don't or can't specify a filename. See also 'Force to open "Save As..." popup open at text link click for pdf in HTML'.

指定文件名

如果blob是用File构造函数创建的，你也可以设置一个文件名，但只有少数web浏览器(包括Chrome和Firefox)支持File构造函数。文件名也可以指定为download属性的参数，但这需要考虑大量的安全问题。Internet Explorer 10和11提供了自己的方法msSaveBlob来指定文件名。

示例代码

var file; var data = []; data.push("This is a test\n"); data.push("Of creating a file\n"); data.push("In a browser\n"); var properties = {type: 'text/plain'}; // Specify the file's mime-type. try { // Specify the filename using the File constructor, but ... file = new File(data, "file.txt", properties); } catch (e) { // ... fall back to the Blob constructor if that isn't supported. file = new Blob(data, properties); } var url = URL.createObjectURL(file); document.getElementById('link').href = url; <a id="link" target="_blank" download="file.txt">Download</a>

您可以生成一个数据URI。但是，存在特定于浏览器的限制。