useFavicon Hook

Introduction

A custom React Hook for dynamically changing the favicon of a web page.

Play

Usage

import { useEffect } from "react";

const useFavicon = (url: string) => {
  useEffect(() => {
    const favicon: HTMLLinkElement | null =
      document.querySelector("link[rel='icon']");
    if (!favicon) {
      const _favicon = document.createElement("link");
      _favicon.rel = "icon";
      _favicon.href = url;
      document.head.appendChild(_favicon);
    } else {
      favicon.href = url;
    }
  }, [url]);
};
export default useFavicon;

Parameters

Features

• Dynamically changes the favicon of a web page.
• Automatically updates the favicon when the url parameter changes.

Example

import useFavicon from "./favicon";

const TestUseFavicon = () => {
  let url = "path/to/favicon.png"; // Replace with the actual URL of your favicon image.
  useFavicon(url);

  return <div>favicon</div>;
};
export default TestUseFavicon;

In this example, we have a component called TestUseFavicon that uses the useFavicon hook to dynamically change the favicon of the web page. The url variable represents the URL of the new favicon image. When the component mounts or when the url parameter changes, the favicon will be updated accordingly.

Use Scenario

The useFavicon hook is useful when you want to dynamically change the favicon of a web page based on certain events or conditions. It allows you to easily update the favicon without having to modify the HTML directly. This can be handy for indicating different states or events in your web application.