### Install Sendsay API Client (Yarn/NPM)

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Installs the Sendsay API JavaScript client using Yarn or NPM. This is the primary method for adding the library to your project.

```bash
yarn add sendsay-api
```

--------------------------------

### Node.js Setup with Fetch Polyfill

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Sets up the Sendsay client in a Node.js environment, requiring the 'isomorphic-fetch' polyfill for network requests. Demonstrates basic API key authentication and a sample request.

```javascript
require('isomorphic-fetch'); // Apply the polyfill. 
const Sendsay = require('sendsay-api');

const sendsay = new Sendsay({ apiKey: 'secret' });

sendsay.request({ action: 'sys.settings.get', list: ['about.id']}).then(function(res) {
  console.log(res.list['about.id']);
})
```

--------------------------------

### Import Sendsay API Client (CommonJS)

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Imports the Sendsay API client in a CommonJS environment, typically used in Node.js or older JavaScript setups.

```javascript
const Sendsay = require('sendsay-api');
```

--------------------------------

### Sendsay API Request with API Key Authentication

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Demonstrates how to authenticate with the Sendsay API using an API key and make a request to retrieve system settings.

```javascript
var sendsay = new Sendsay({ apiKey: '...' });

sendsay.request({ action: 'sys.settings.get', list: ['about.id']}).then(function(res) {
  console.log(res.list['about.id']);
})
```

--------------------------------

### Initialize Sendsay with API Key and Make Request

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/index.html

Initializes the Sendsay client using an API key stored in local storage. It then makes a 'sys.settings.get' request to retrieve 'about.id' and logs the settings or any errors to the console.

```javascript
window.sendsay = new Sendsay({ apiKey: window.localStorage.getItem('apiKey') });
var req = sendsay.request({
  action: 'sys.settings.get',
  list: [ 'about.id' ],
});
req.then( function(res) {
  var settings = res.list;
  console.log('Sendsay', settings);
}, function(err) {
  console.log('Sendsay', err);
});
```

--------------------------------

### Initialize Sendsay with Basic Auth and Make Request

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/index.html

Initializes the Sendsay client with basic authentication details parsed from local storage. It then makes a 'sys.settings.get' request to retrieve 'about.id' and logs the settings or any errors to the console.

```javascript
window.sendsayBasic = new Sendsay({ auth: JSON.parse(window.localStorage.getItem('auth')) });
var req = sendsayBasic.request({
  action: 'sys.settings.get',
  list: [ 'about.id' ],
});
req.then( function(res) {
  var settings = res.list;
  console.log('Sendsay Basic', settings);
}, function(err) {
  console.log('Sendsay Basic', err);
});
```

--------------------------------

### Initialize Sendsay with Cookies and Make Request

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/index.html

Initializes the Sendsay client and sets the session and policy from cookies. It then makes a 'sys.settings.get' request to retrieve 'about.id' and logs the settings or any errors to the console.

```javascript
window.sendsayCookie = new Sendsay();
sendsayCookie.setSessionFromCookie();
sendsayCookie.setPolicyFromCookie();
var req = sendsayCookie.request({
  action: 'sys.settings.get',
  list: [ 'about.id' ],
});
req.then( function(res) {
  var settings = res.list;
  console.log('Sendsay Cookie', settings);
}, function(err) {
  console.log('Sendsay Cookie', err);
});
```

--------------------------------

### Sendsay API Simple Request for Settings

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Performs a simple request to the Sendsay API to retrieve various system settings. The response contains a list of requested settings.

```javascript
var req = sendsay.request({
  action: 'sys.settings.get',

  list: [
    'about.confirm',
    'about.id',
    'about.label.member',
    'about.name',
    'about.open.dt',
    'about.open.visitor',
    'about.owner.email',
    'about.tarif',
    'about.user',
    'anketa.id.base',
    'anketa.id.custom',
    'interface.type',
    'interface.type.user',
    'issue.email.sender.moderation',
    'issue.pte.datakey',
    'lbac.inuse',
    'lbac.on',
    'member.hard.limit',
    'member.hard.rest',
    'member.noconfirm.limit',
    'member.noconfirm.rest',
    'pase.autopayment',
    'pase.destination',
    'pase.left',
    'pase.state',
    'about.chat.on',
  ],
});

req.then(function(res) {
  var settings = res.list;

  console.log(settings);
});
```

--------------------------------

### Sendsay API Request with Login and Password Authentication

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Shows how to authenticate with the Sendsay API using login credentials. The client automatically creates a session before the first request.

```javascript
var sendsay = new Sendsay({
  auth: {
    login: 'login', 
    sublogin: 'optional',
    password: 'secret',     
  }
});

sendsay.request({ action: 'sys.settings.get', list: ['about.id']}).then(function(res) {
  console.log(res.list['about.id']);
})
```

--------------------------------

### Sendsay API Login Method

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Demonstrates authenticating with the Sendsay API using a dedicated `login` method. This method explicitly handles the authentication process.

```javascript
var sendsay = new Sendsay();

sendsay.login({
  login: 'login', 
  sublogin: 'optional',
  password: 'secret',  
}).then(function() {
  // The sendsay instance is authenticated. Do a request.
})
```

--------------------------------

### Include Sendsay API Client via CDN (Minified)

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Includes the minified Sendsay API client directly into an HTML page using a CDN link. Suitable for quick integration without a build process.

```html
<script type="text/javascript" src="https://image.sendsay.ru/app/js/v1/sendsay-api.min.js"></script>
```

--------------------------------

### Include Sendsay API Client via CDN (Unminified)

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Includes the unminified Sendsay API client directly into an HTML page using a CDN link. Useful for debugging or development.

```html
<script type="text/javascript" src="https://image.sendsay.ru/app/js/v1/sendsay-api.js"></script>
```

--------------------------------

### Import Sendsay API Client (ES6 Modules)

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Imports the Sendsay API client into an ES6 module environment. This allows for modern JavaScript development practices.

```javascript
import Sendsay from 'sendsay-api';
```

--------------------------------

### Sendsay Client Configuration with Custom API URL

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Configures the Sendsay client with a custom API endpoint URL, overriding the default. This is useful for development or staging environments.

```javascript
var sendsay = new Sendsay({ apiUrl: 'https://api.development.sendsay.ru' })
```

--------------------------------

### Set Sendsay Session Manually

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Manually sets the Sendsay session using a provided session string. This is an alternative to automatic session management.

```javascript
sendsay.setSession('secret');
```

--------------------------------

### Retrieve Sendsay Session from Custom Cookie

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Retrieves the Sendsay session information from a custom-named cookie. This allows flexibility in cookie naming conventions.

```javascript
sendsay.setSessionFromCookie('custom_cookie_name');
```

--------------------------------

### Retrieve Sendsay Session from Default Cookie

Source: https://github.com/sendsay-ru/sendsay-api-js/blob/master/README.md

Retrieves the Sendsay session information from the default cookie named 'sendsay_session'. This is useful for maintaining user sessions across requests.

```javascript
sendsay.setSessionFromCookie(); // By default the cookie's name is 'sendsay_session'.
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.