For you to init your SDK and interact with Appwrite services you need to add a web platform to your project. To add a new platform, go to your Appwrite console, choose the project you created in the step before and click the 'Add Platform' button.
From the options, choose to add a **Web** platform and add your client app hostname. By adding your hostname to your project platform you are allowing cross-domain communication between your project and the Appwrite API.
Once your SDK object is set, access any of the Appwrite services and choose any request to send. Full documentation for any service method you would like to use can be found in your SDK documentation or in the [API References](https://appwrite.io/docs) section.
The Appwrite Web SDK provides type safety when working with database documents through generic methods. Methods like `listDocuments`, `getDocument`, and others accept a generic type parameter that allows you to specify your custom model type for full type safety.
console.log(`Book: ${book.name} by ${book.author}`); // Now you have full type safety
});
} catch (error) {
console.error('Appwrite error:', error);
}
```
**JavaScript (with JSDoc for type hints):**
```javascript
/**
*@typedef {Object} Book
*@property {string} name
*@property {string} author
*@property {string} [releaseYear]
*@property {string} [category]
*@property {string[]} [genre]
*@property {boolean} isCheckedOut
*/
const databases = new Databases(client);
try {
/** @type {Models.DocumentList<Book>} */
const documents = await databases.listDocuments(
'your-database-id',
'your-collection-id'
);
documents.documents.forEach(book => {
console.log(`Book: ${book.name} by ${book.author}`); // Type hints available in IDE
});
} catch (error) {
console.error('Appwrite error:', error);
}
```
**Tip**: You can use the `appwrite types` command to automatically generate TypeScript interfaces based on your Appwrite database schema. Learn more about [type generation](https://appwrite.io/docs/products/databases/type-generation).
### Error Handling
The Appwrite Web SDK raises an `AppwriteException` object with `message`, `code` and `response` properties. You can handle any errors by catching the exception and present the `message` to the user or handle it yourself based on the provided error information. Below is an example.
```javascript
try {
const user = await account.create(ID.unique(), "email@example.com", "password", "Walter O'Brien");