About the difference between fs.stat and fs.fstat in node.js

fs.stat and fs.fstat are both used to obtain status information of files. The following article mainly introduces relevant information about the difference between fs.stat and fs.fstat in node.js. The following is introduced in the article It is very detailed and has certain reference and learning value for everyone. Friends who need it can take a look below.

Preface

fs.stat and fs.fstat have the same method functions, they both obtain the status information of the file. This article mainly This article introduces the relevant content about the difference between fs.stat and fs.fstat in node.js. It is shared for everyone’s reference and study. Let’s take a look at the detailed introduction:

##fs.stat Usage:

fs.stat('./aa.js', function(err, stats) { 
 if (err) { 
 throw err; 
 } 
 console.log(stats); 
});

##fs.fstat Usage:

fs.open('./aa.js', 'a', function(err, fd) { 
 if (err) { 
 throw err; 
 } 
 fs.fstat(fd, function(err, stats) { 
 if (err) { 
  throw err; 
 } 
 console.log(stats); 
 }); 
})

The first parameter fs.stat receives is a file path string

fs.fstat receives a File descriptor;

The kernel uses file descriptors to access files. File descriptors are nonnegative integers. When opening an existing file or creating a new file, the kernel returns a file descriptor. To read and write files, you also need to use a file descriptor to specify the file to be read and written.

Other Fs methods are similar to this description;

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