How does NodeJS read specified files and directories

This article mainly explains "how to read specified files and directories by NodeJS". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to read specified files and directories by NodeJS.

1. Use fs.readFile and fs.readdir to read files and directories, respectively.

2. Two API receive two parameters, the first is the path, and the second is the callback function. The callback function also has two parameters that contain data information. Print the data information to get the content.

Example

/ * learnNode.js * / let fs = require ('fs'); fs.readFile (' newJs.txt', (err, data) = > {if (err) {console.log ('error');} else {console.log ("read file successfully!") ; console.log (data);}})

/ * learnNode.js * / let fs = require ('fs'); fs.readdir ('. /', (err, data) = > {if (err) {console.log ('error');} else {console.log ("read directory successful!") ; console.log (data);}})

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