A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_URI::$config is deprecated

Filename: core/URI.php

Line Number: 101

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Router::$uri is deprecated

Filename: core/Router.php

Line Number: 127

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$benchmark is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$hooks is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$config is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$log is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$utf8 is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$uri is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$exceptions is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$router is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$output is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$security is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$input is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$lang is deprecated

Filename: core/Controller.php

Line Number: 82

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$db is deprecated

Filename: core/Loader.php

Line Number: 396

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_DB_mysqli_driver::$failover is deprecated

Filename: database/DB_driver.php

Line Number: 371

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Trying to access array offset on true

Filename: libraries/Email.php

Line Number: 978

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$email is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 295

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 169

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 238

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 318

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 359

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 282

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 289

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 304

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 314

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 315

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 316

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 317

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Session ini settings cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 375

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent

Filename: Session/Session.php

Line Number: 110

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Session cannot be started after headers have already been sent

Filename: Session/Session.php

Line Number: 143

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$session is deprecated

Filename: core/Loader.php

Line Number: 1283

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Blogs::$user_model is deprecated

Filename: core/Loader.php

Line Number: 358

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
Line: 7
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 8
Function: __construct

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$load is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$pgmodule is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$benchmark is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$hooks is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$config is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$log is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$utf8 is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$uri is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$exceptions is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$router is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$output is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$security is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$input is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$lang is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$db is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$email is deprecated

Filename: core/Loader.php

Line Number: 931

Backtrace:

File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
Line: 234
Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
Line: 315
Function: require_once

A PHP Error was encountered

Severity: 8192

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Function: view

File: /home1/biognosy/skmlhometuitions.in/index.php
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 Introduction to Modules in JavaScript | Post Details - SKML Home Tuitions
 Introduction to Modules in JavaScript
Oct 11, 2020 07:20 0 Comments DotNet PARTH

                                                         Introduction to Modules in JavaScript

 

As our application grows bigger, we want to split it into multiple files, so called “modules”. A module may contain a class or a library of functions for a specific purpose.

For a long time, JavaScript existed without a language-level module syntax. That wasn’t a problem, because initially scripts were small and simple, so there was no need.

But eventually scripts became more and more complex, so the community invented a variety of ways to organize code into modules, special libraries to load modules on demand.

To name some (for historical reasons):

  • AMD – one of the most ancient module systems, initially implemented by the library require.js.
  • CommonJS – the module system created for Node.js server.
  • UMD – one more module system, suggested as a universal one, compatible with AMD and CommonJS.

Now all these slowly become a part of history, but we still can find them in old scripts.

The language-level module system appeared in the standard in 2015, gradually evolved since then, and is now supported by all major browsers and in Node.js.

What is a module?

A module is just a file. One script is one module. As simple as that.

Modules can load each other and use special directives export and import to interchange functionality, call functions of one module from another one:

  • export keyword labels variables and functions that should be accessible from outside the current module.
  • import allows the import of functionality from other modules.

 

For instance, if we have a file sayHi.js exporting a function:

//

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