# Getting Started

It's possible to use TypeDI without TypesScript, however some of the functionality is limited or not available. These differences are listed below in the [Limitations](#limitations) section.

## Installation

To start using TypeDI with JavaScript install it via NPM:

```bash
npm install typedi
```

## Basic usage

The most basic usage is to request an instance of a class definition. TypeDI will check if an instance of the class has been created before and return the cached version or it will create a new instance, cache and return it.

```js
import { Container } from 'typedi';

class ExampleClass {
  print() {
    console.log('I am alive!');
  }
}

/** Request an instance of ExampleClass from TypeDI. */
const classInstance = Container.get(ExampleClass);

/** We received an instance of ExampleClass and ready to work with it. */
classInstance.print();
```

For more advanced usage examples and patterns please read the [next page](/typedi/usage-without-typescript/usage/02-basic-usage.md).

## Limitations

*To be written...*


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