我可以使用Javascript来获取文件目录列表吗？ [英] Can I use Javascript to get a file directory list?

问题描述

我使用的是客户端Javascript，并且希望获取一个文件夹中所有文件的列表，我相信这个文件夹与我的.html文件位于同一台服务器上。我对这个术语非常陌生，所以如果我不准确或只是出错，我会提前道歉。

I'm using client-side Javascript and want to get a list of all the files in a folder that I believe is hosted on the same server as my .html file. I'm very unfamiliar with the terminology so I apologize in advance if I'm inaccurate or just plain wrong.

我目前使用 d3.text （js / data / nodes＃.csv，text / csv，someFunction）来加载要使用的数据文件。我想，由于所有的文件名我想要的模板化的方式相同，我可以通过循环遍历所有可能的数字，并只获取有效调用的文件名，通过解决方案：

I currently use d3.text("js/data/nodes#.csv", "text/csv", someFunction) to load in a data file to work with. I figure that since all the filenames I want are templated the same way, I can hack a solution by looping through all possible numbers and only get the filenames of valid calls, like so:

function getDirList() {
    var possiblePathsList = something predetermined;
    var directoryList = [];

    possiblePathsList.forEach(function(path){
        if (isPath(path)) { directoryList.push(path); }
    });

    return directoryList;
}

function isPath(path){
    d3.text(path, "text/csv", function(data){   
        return (data !== null);
    });
}

因为我可以用这种非常垃圾的方式得到一个列表，做一些（多，更多）优雅的方法来实现我的目标。这是可能的吗？

Because I can get a list in this very rubbish way, I presume there must be some (much, much more) elegant method of achieving my goal. Is this possible?

推荐答案

根据定义，如果你使用客户端javascript，它没有访问服务器的文件夹结构体。你可以写一个单独的ajax调用，或者将有一个服务器端脚本（在任何langauge），将通过目录并打印出来到一个json文件，然后你可以使用你的javascript处理。像这样：

By definition if you're using client side javascript, it doesn't have access to the server's folder structure. You could write a separate ajax call or something that would have a server side script (in whatever langauge) that would go through the directories and print them out to a json file that you would then be able to process with your javascript there. Something like this:

ajax.php：

ajax.php:

$directory = "temp/";

$dir = opendir($directory);

$structure = array();

while($file = readdir($dir)){
  $structure[] = $file;
}

print json_encode($structure);
exit();

然后你将有一些javascript调用该脚本并通过json文件解析

Then you will have some javascript that calls that script and parses through the json file

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