hermes-channel

A messaging channel for sending data between specific topic listeners. This works between browsing contexts (that is, windows, tabs, frames, or iframes) and workers of the same origin.

TOC

• Install
• Import
• APIs

Install

npm i hermes --save

yarn add hermes

Import

import hermes from "hermes-channel";

API

• send(topic, data, [includeSelf=false]): Send data to other browser tabs subscribed to a specified topic.

  • topic: The name of the topic in which the data will be sent to.
  • data: The data to be sent. This needs to be a JSON-serializable object.
  • includeSelf (optional, default=false): A boolean indicating whether the data should also be sent to the current tab.

  hermes.send("some-topic", "hello world");
  hermes.send("some-topic", { title: "awesome" });
  hermes.send("some-topic", { title: "awesome" }, true);

• on(topic, callback): Add a callback function for a specified topic.

  • topic: The name of the topic to subscribe to.
  • callback: The callback function, which accepts a single argument representing the data that was sent originally.

  hermes.on("some-topic", function(data) {});

• off(topic, [callback]): Remove a callback function for a specified topic.

  • topic: The name of the topic to unsubscribe from.
  • callback (optional): The callback function to remove, or don't provide in order to remove all callback functions for the topic topic.

  hermes.off("some-topic", callbackFunction);
  hermes.off("some-topic");