blocks|key|2294156|text|var+files+=+fs.readdirSync(homedir);
var+path+=+require('path');

for(var+i+in+files)+{
+++if(path.extname(files[i])+===+".txt")+{
+++++++//do+something
+++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2294157|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>var files = fs.readdirSync(homedir);
var path = require('path');

for(var i in files) {
 if(path.extname(files[i]) === ".txt") {
 //do something
 }
}
</code></pre>

blocks|key|2294175|text|您可以使用fs.readdir列出文件并查找以.txt结尾的文件|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2294176|var+myPath+=+"/usr/home/jordan";
fs.readdir(path,+function(fileNames)+{
++++for(var+i+=+0;+i+<+fileNames.length;+i%2B%2B)+{
++++++var+fileName+=+fileNames[i];
++++++if(path.extname(fileName)+===+".txt")+{
++++++++fs.readfile(path.join(myPath,fileName),+function(err,data)+{
++++++++++console.log(data);
++++++++});
++++++++break;
++++++}
++++}
++}
);|code-block|syntax|javascript|2294177|请注意，这需要path，因此在顶部添加var+path+=+require("path")。|2294178|entityMap|0|LINK|mutability|MUTABLE|url|http://nodejs.org/api/fs.html#fs_fs_readdir_path_callback|1|http://nodejs.org/api/path.html^0|N|4|5|A|0|0|0|J|Q|7|4|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|F|3|G|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@$9|16|A|17|1|18]]|E|$]]|$1|M|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]|U|$5|P|Q|R|E|$S|V]]]]

You can use <a href="http://nodejs.org/api/fs.html#fs_fs_readdir_path_callback" rel="nofollow">fs.readdir</a> to list the files and find the one that ends with <code>.txt</code>:

<pre><code>var myPath = "/usr/home/jordan";
fs.readdir(path, function(fileNames) {
 for(var i = 0; i &lt; fileNames.length; i++) {
 var fileName = fileNames[i];
 if(path.extname(fileName) === ".txt") {
 fs.readfile(path.join(myPath,fileName), function(err,data) {
 console.log(data);
 });
 break;
 }
 }
 }
);
</code></pre>

Note this requires <a href="http://nodejs.org/api/path.html" rel="nofollow">path</a> so add <code>var path = require("path")</code> at the top.

blocks|key|1970153|text|您可以使用fs.readdir和path.extname|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1970154|var+fs+=+require('fs')
++,+path+=+require('path');

function+getFileWithExtensionName(dir,+ext)+{
++fs.readdir(dir,+function(files){
++++for+(var+i+=+0;+i+<+files.length;+i%2B%2B)+{
++++++if+(path.extname(files[i])+===+'.'+%2B+ext)
++++++++return+files[i]
++++}
++});
}

var+homedir+=+"/usr/home/jordan";
var+mytxtfilepath=+getFileWithExtensionName(homedir,+'txt')
fs.readfile(mytxtfilepath,+function(err,data)+{
++console.log(data);
});|code-block|syntax|javascript|1970155|entityMap|0|LINK|mutability|MUTABLE|url|http://nodejs.org/api/fs.html#fs_fs_readdir_path_callback|1|http://nodejs.org/api/path.html#path_path_extname_p^0|5|A|0|G|C|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

You can use <a href="http://nodejs.org/api/fs.html#fs_fs_readdir_path_callback" rel="nofollow">fs.readdir</a> and <a href="http://nodejs.org/api/path.html#path_path_extname_p" rel="nofollow">path.extname</a>

<pre><code>var fs = require('fs')
 , path = require('path');

function getFileWithExtensionName(dir, ext) {
 fs.readdir(dir, function(files){
 for (var i = 0; i &lt; files.length; i++) {
 if (path.extname(files[i]) === '.' + ext)
 return files[i]
 }
 });
}

var homedir = "/usr/home/jordan";
var mytxtfilepath= getFileWithExtensionName(homedir, 'txt')
fs.readfile(mytxtfilepath, function(err,data) {
 console.log(data);
});
</code></pre>

blocks|key|2294202|text|您也可以使用Glob+Module。它对我来说很好！|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2294203|var+glob+=+require(+'glob'+);++
var+myPath=+"/fileFolder/**/*.txt";

glob(myPath,+function+(er,+files)+{
++++//+Files+is+an+array+of+filenames.
++++//+Do+something+with+files.
})|code-block|syntax|javascript|2294204|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/isaacs/node-glob^0|6|B|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You can use <a href="https://github.com/isaacs/node-glob" rel="nofollow">Glob Module</a> as well. It works fine for me!

<pre><code>var glob = require( 'glob' ); 
var myPath= "/fileFolder/**/*.txt";

glob(myPath, function (er, files) {
 // Files is an array of filenames.
 // Do something with files.
})
</code></pre>

blocks|key|1970202|text|懒惰的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1970203|npm+install+--save+readdir|code-block|syntax|javascript|1970204|然后|1970205|const+{read}+=+require('readdir');
read("/usr/home/jordan",+"**/*.txt",+(err,+paths)+=>
++++console.log(paths)
);|1970206|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

The lazy solution:

<pre><code>npm install --save readdir
</code></pre>

and then

<pre><code>const {read} = require('readdir');
read("/usr/home/jordan", "**/*.txt", (err, paths) =&gt;
 console.log(paths)
);
</code></pre>

The directory all my files are in is: '/usr/home/jordan' and I have many files under there (in the directory itself, but one file that is named with a .txt extension.

With nodejs and fs, I want to put that first file (or any file) with a txt extension into "mytxtfilepath". I only have a single .txt file in the whole directory (amongst many other files but with different extensions) The single .txt file could be named ANYTHING, I cannot guarantee what the name will be at any given time, only that it ends in .txt:

<pre><code>var homedir = "/usr/home/jordan";
var mytxtfilepath=homedir + "???????";
fs.readfile(mytxtfilepath, function(err,data) {
 console.log(data);
});
</code></pre>

How do I put the correct path to my txt file without hardcoding the name of the txt file itself?

How to get the first file with a .txt extension in a directory with nodejs?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我的所有文件所在的目录是：'/usr/home/jordan‘，我在那里有很多文件(在目录中，但有一个文件的扩展名是.txt。使用nodejs和fs，我希望将第一个文件(或任何扩展名为txt的文件)放入"mytxtfilepath“中。我在整个目录中只有一个.txt文件(在许多其他文件中，但具有不同的扩展名)。这个.t...

问如何获取nodejs目录下第一个扩展名为.txt的文件？
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问如何获取nodejs目录下第一个扩展名为.txt的文件？EN