# Limit a collection

Ternoa provides you with many collection features. Not only creating a collection can be done in just a few lines of code but we also cover many collection basic use cases: Ternoa allows you to easily create functions to close, limit and burn a collection.

### Prerequisites

Before getting started, make sure you have the following ready:

1. [Create a Ternoa](/getting-started/wallets/ternoa-wallet.md) account with [Alphanet CAPS](broken://pages/ej9gceaLIhCN2PgUBh42)
2. Install and set up your editor of choice (we will use Visual Studio Code \[VSC] in this tutorial)
3. Install [NodeJS v.14+](https://nodejs.org/en/download/) & NPM
4. [Install & initialize Ternoa-JS](/build-1/javascript/ternoa-js-library-utilities/installation-and-initialization.md)

### How to limit a collection of NFT using Ternoa-JS

This function limits a collection of NFT on the Ternoa chain. It returns an object promise containing the CollectionLimitedEvent provided by the Ternoa blockchain. Use your own account by updating the //TernoaTestAccount with your account seed when retrieving the keyring from the example below. **Replace the COLLECTION\_ID** with the one to limit.

**Note:** The collection limit can only be set once. Either at collection creation or using the extrinsic below.

```typescript
import {
	limitCollection,
	initializeApi,
	getKeyringFromSeed,
	WaitUntil,
} from "ternoa-js";

const limitCollection = async () => {
	try {
		await initializeApi();
		const keyring = await getKeyringFromSeed("//TernoaTestAccount");
		const COLLECTION_ID = 1; // the collection id you want to limit
		const collectionData = await limitCollection(
			COLLECTION_ID,
			keyring,
			WaitUntil.BlockInclusion
		);
		console.log(
			`Collection ${collectionData.collectionId} limited to : ${collectionData.limit}`
		);
	} catch (e) {
		console.error(e);
	}
};
```

#### The expected params

```markdown
`id`: The ID of the Collection.
`keyring`: the provided keyring (containing the address) will be used to sign the transaction and pay the execution fee.
`waitUntil`: WaitUntil defines at which point we want to get the results of the transaction execution: BlockInclusion or BlockFinalization.
```

#### Response

The response provided from the blockchain event includes all the information below according to the parameters provided when limiting a collection of NFT.

```markdown
`collectionId`: ID of the limited collection.
`limit`: the limit set for the collection.
```


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