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How we can open a file in Node JS?

open() function is used to opens a file by passing a file name.

Syntax : fs.open(path, flags[mode], callback)

Parameters

  • path : It is a string having file name with complete path
  • flags : It indicates the behavior of the file to be opened
  • mode : It sets the file mode like permission
  • callback : gets two arguments (err, fd)

Example

                                        
var fs = require("fs");

// Asynchronous - Open a File
console.log("open file");
fs.open('file.txt', 'r+', function(err, fd) {
   if (err) {
      return console.error(err);
   }
   console.log("File opened");     
});

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