Nodejs Course

To easily work with directories and files on server, use the fs-extra module.
It can be a drop in replacement for "fs" build-in module.
- Before using the "fs-extra" module, you have to install it. To install "fs-extra", run this code in command line interface:
npm install --save fs-extra
Then, you can use the fs-extra module in your Node.js projects, as a drop in replacement for native fs.
const fs = require('fs-extra');

Moving directory

A simple way to move a directory in Node.js it is to use the fs.move(oldPath, newPath, callback) method of the fs-extra module.
- Example: move 'dir_2/' directory from 'test/' to 'dirx/':
const fs = require('fs-extra');

fs.move('./test/dir_2/', './dirx/dir_2/', err => {
  if(err) return console.error(err);
  console.log('success!');
});

Copy directory

To copy a directory in Node.js, you can use the copy() method of the fs-extra module.
Example: Copy the 'dir_2/' directory from 'test/' to 'dirx/':
const fs = require('fs-extra');

fs.copy('./test/dir_2/', './dirx/dir_2/', err =>{
  if(err) return console.error(err);
  console.log('success!');
});

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag is used to add lists into <ul> and <ol> elements?
<dt> <dd> <li>
<ul>
 <li>http://coursesweb.net/html/</li>
 <li>http://coursesweb.net/css/</li>
</ul>
Which value of the "display" property creates a block box for the content and ads a bullet marker?
block list-item inline-block
.some_class {
  display: list-item;
}
Which instruction converts a JavaScript object into a JSON string.
JSON.parse() JSON.stringify eval()
var obj = {
 "courses": ["php", "javascript", "ajax"]
};
var jsonstr = JSON.stringify(obj);
alert(jsonstr);    // {"courses":["php","javascript","ajax"]}
Indicate the PHP class used to work with HTML and XML content in PHP.
stdClass PDO DOMDocument
$strhtml = '<body><div id="dv1">CoursesWeb.net</div></body>';
$dochtml = new DOMDocument();
$dochtml->loadHTML($strhtml);
$elm = $dochtml->getElementById("dv1");
echo $elm->nodeValue;    // CoursesWeb.net
Node.js Move and Copy Directory

Last accessed pages

  1. OOP - Classes and objects - Create Class (2474)
  2. Change CSS file with jQuery (4162)
  3. Area and Perimeter Calculator for 2D shapes (7880)
  4. Get Attribute (ID, Class, Name, Title, Src) with jQuery (67697)
  5. Simple PHP Upload Script (6881)

Popular pages this month

  1. Courses Web: PHP-MySQL JavaScript Node.js Ajax HTML CSS (534)
  2. querySelector and querySelectorAll (299)
  3. Read Excel file data in PHP - PhpExcelReader (261)
  4. PHP-MySQL free course, online tutorials PHP MySQL code (246)
  5. HTML Course - Free Lessons (195)