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Node js tutorial step by step 8 More on Modules Video Lecture | The Complete NodeJS Developer Course (in Hindi) - Back-End Programming
FAQs on Node js tutorial step by step 8 More on Modules Video Lecture - The Complete NodeJS Developer Course (in Hindi) - Back-End Programming
| 1. What are modules in Node.js? |  |
Ans. In Node.js, modules are separate files that contain reusable code. They help in organizing and encapsulating code into smaller, manageable units. Modules can be imported and used in other parts of the code, promoting code reusability and maintainability.
| 2. How do you create a module in Node.js? | |
Ans. To create a module in Node.js, you need to define the functionality in a separate file and export it using the `module.exports` or `exports` object. This allows other parts of the code to import and use the module. For example:
```
// sampleModule.js
const greeting = "Hello, World!";
const greet = () => {
console.log(greeting);
};
module.exports = {
greet,
};
```
| 3. How can you import a module in Node.js? | |
Ans. In Node.js, you can import a module using the `require` function. This function takes the path of the module file as an argument and returns the exported functionality. For example:
```
// app.js
const sampleModule = require('./sampleModule');
sampleModule.greet(); // Output: Hello, World!
```
| 4. Can a module in Node.js have dependencies on other modules? | |
Ans. Yes, a module in Node.js can have dependencies on other modules. You can import other modules within a module using the `require` function. This allows you to use the functionality provided by other modules and build complex applications by combining multiple modules together.
| 5. How can you create a custom module in Node.js? | |
Ans. To create a custom module in Node.js, you can define the functionality in a separate file and export it using the `module.exports` or `exports` object. This allows other parts of the code to import and use the module. Custom modules can be used to encapsulate reusable code and promote code organization and reusability.
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Nov 22, 2024 Last updated |
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