Instructions for the fs.readdir method in node.js

method description:

The file directory is read asynchronously.

syntax:

fs.readdir(path, [callback(err,files)])

Since this method belongs to the fs module, it is necessary to introduce the fs module (var fs= require(" fs "))

before using it

receive parameters:

path   directory path

callback     callback, passing two parameters err and files. files is an array containing the names of all files in the specified directory.

Example of :

var fs = require('fs');

fs.readdir('readdirtest', function(err,files){

 if(err){

  console.log(err);

 }

 console.log(files);

})

source code:

fs.readdir = function(path, callback) {

  callback = makeCallback(callback);

  if (!nullCheck(path, callback)) return;

  binding.readdir(pathModule._makeLong(path), callback);

};