angular.js integration with apache kafka

I don’t think (just cannot find at glance) there is Kafka client for front-end JavaScript. I cannot actually imagine stable setup when millions of producers (each client’s browser) writing to the same Kafka topic.
What you need to do in Angular, is to call your server side function to log your events in Kafka.
Server side code may be written in a bunch of languages, including JavaScript for node.js.
Please take a look for available clients at Kafka Documentation

Update 2019: There are several projects implementing REST over HTTP(s) proxy for producer and consumer interfaces. For example Kafka Rest project (source). Never tried these by myself though.