What is the module module of es6

Module module is a mechanism in ES6 to encapsulate code and manage dependencies. It is implemented through the export and import keywords to improve code readability, maintainability and reusability. Its advantages include encapsulation, reusability, dependency management and asynchronous loading. Module modules come in two types: script module (.js) and type module (.mjs). You need to pay attention to browser compatibility and circular dependencies when using them.

Module module in ES6

ES6 (also known as ECMAScript 2015) introduces a new module system , called Module module. It solves the limitations of JavaScript code in terms of organization and reuse.

What is a Module module?

Module module is an encapsulation mechanism used to encapsulate related code and manage dependencies. It allows developers to split code into smaller, reusable units, thereby improving code readability, maintainability, and reusability.

Advantages of Module module:

• Encapsulation: Encapsulate relevant code in modules to prevent conflicts and namespace pollution.
• Reusability: Modules can be imported and reused by other modules, improving the maintainability and flexibility of the code.
• Dependency management: The module system automatically manages dependencies between modules to ensure that code is loaded and executed in the correct order.
• Asynchronous loading: Modules can be loaded asynchronously to improve page loading speed and user experience.

Module module syntax:

To create a Module module, use the export keyword to export the code within the module, and then use import Keywords to import other modules:

<code class="javascript">// module1.js
export function greet() {
  console.log("Hello, world!");
}

// module2.js
import { greet } from "./module1.js";
greet(); // 输出: Hello, world!</code>

Type of Module module:

Module There are two types of modules:

• Script module: ends with .js, the internal code will not be automatically executed and needs to be imported through import to be executed.
• Type module: Ending with .mjs, the internal code will be automatically executed.

Note on using Module module:

• Module module can only be used in browsers and runtime environments that support ES6.
• When there are circular dependencies between modules, you need to handle them carefully to avoid deadlocks.
• The loading order of modules may affect the execution results of the code.

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