Handling Push & Pull in browser

Let's review standard Push & Pull client within an application. Here's an example of app page with web interface:

<!DOCTYPE html>
<html>
<head>
	<title>Bitri24 application with Push & Pull</title>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

	<script src="//api.bitrix24.com/api/v1/"></script>
	<script src="//api.bitrix24.com/api/v1/pull/"></script>
</head>
<body>
	<script>
		
		window.appPullClient = new BX.PullClient({
			restApplication: 'myApplication_test.bitrix24.ru',
			restClient: BX24,
			userId: 1
		});

		window.appPullClient.subscribe({
			moduleId: 'application',
			callback: function (data) {
				console.warn(data); // {command: '...', params: {...}, extra: {...}}
			}.bind(this)
		});
		
		window.appPullClient.start();
				
	</script>
</body>
</html>

Indicate the following parameters when initializing BX.PullClient:

restApplication - indicate arbitrary app's string identifier. (Can be unique for each portal with your application installed)
userId - indicate currently authorized user ID

Connecting PullClient allows for your app's front-end to receive an event from your app's back-end channel via при помощи метода pull.application.event.add.

Bitrix24 Applications