javascript - JavaScript 中 FileReader#readEntries 可以读取的目录的最大文件数

Question

我正在创建一个 Chrome 应用程序。我必须读取目录的文件并且我正在使用 DirectoryEntry API和 DirectoryReader API .

我的问题是使用 DirectoryReader#readEntries 读取的最大文件数是 100，前 100 个(字母顺序)

var reader = currentDir.createReader();
var read = reader.readEntries.bind(reader, function(files) {
    for ( var i = 0; i < files.length; i++){
         if (files[i].name == nameSearches){
                callback(files[i]);
            }

        }
    })
    callback(undefined)
}
read();

files.length的值为100，目录下还有更多文件

我不确定这个限制是否是关于谷歌浏览器、谷歌浏览器应用程序、Javascript...以及是否可以克服这个限制

解决方案标记为结果代码是这样的:

var reader = currentDir.createReader();
var read = reader.readEntries.bind(reader, function(files) {
    if (files.lenght == 0) {
        callback(undefined);
    }
    for ( var i = 0; i < files.length; i++){
        if (files[i].name == nameSearches){
                callback(files[i]);
            }

        }
    })
    read();

}
read();

Answer 1

阅读您链接的文档!

The only method for this interface, readEntries() is for listing all the files and folders in a directory. To list all the entries, you need to do the following:

1. Call directoryEntry.createReader() to create a new DirectoryReader.
2. Call readEntries().
3. Continue calling readEntries() until an empty array is returned. You have to do this because the API might not return all entries in a single call.