Ashik Chapagain
The Tech Hulk

The Tech Hulk

How I built Hashnode Reactor: React to hashnode articles in a snap

How I built Hashnode Reactor: React to hashnode articles in a snap

Hashnode reactor helps you react to your favorite hashnode articles in a fraction of a second.

Ashik Chapagain
·Aug 18, 2021·

3 min read

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Hey hashnoders

Welcome to my new article. In this article, I'll show how I have built Hashnode Reactor to make reacting to post easier.




James Q Quick recently uploaded a video on his channel in which he created the script to clicks the button and paste that in the console using RayCast. But that wasn't the best idea to do because every time you have to open the console and paste the script or use the RayCast KeyStroke. So I have come with the chrome extension to do so.


Hashnode Reactor is a chrome extension that will help you react to your favorite hashnode articles in a fraction of a second. It clicks all the reaction buttons in the hashnode article.

How I built it?

  • First I created a folder for the extension and opened it in the VS Code using code .;
  • I created a manifest.json file with the following contents.
    "manifest_version": 2, // version of manifest we are using
    "name": "Hashnode Reactor",
    "description": "Click every reactions on the hashnode blog",
    "version": "1.0", // version of our extension
    "permissions": ["tabs", "<all_urls>"],
    "icons": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    "browser_action": {
      "default_popup": "popup.html"

    Icons are available in Github Repo

  • After this, I created popup.html and created the basic popup with button to click.

    <!DOCTYPE html>
    <html lang="en">
      <meta charset="UTF-8" />
      <meta http-equiv="X-UA-Compatible" content="IE=edge" />
      <meta name="viewport" content="width=device-width, initial-scale=1.0" />
      <title>Hashnode Blog React</title>
        button {
          padding: 10px 15px;
          background-color: blue;
          border-radius: 10px;
          color: white;
          width: 200px;
          font-size: 16px;
          border: none;
          outline: none;
        p {
          font-size: 16px;
          margin-bottom: 5px;
          text-align: center;
      <p>Hashnode Post Reactor, click on `Click to react`</p>
      <button id="clickToReact">Click to react</button>
      <script src="popup.js"></script>
  • As you can see, I have used popup.js in the popup.html. So now it's time for popup.js. Add the following js to popup.js.
 function injectTheScript() {
   chrome.tabs.query({ active: true, currentWindow: true }, function (tabs) {
     // query the active tab, which will be only one tab
     //and inject the script in it
     chrome.tabs.executeScript(tabs[0].id, { file: 'content_script.js' });

   .addEventListener('click', injectTheScript);
  • In the popup.js, we have injected content_script.js. content_script.js is the main file that clicks the reactions button in the hashnode blog.
function react() {
  const buttons = [
    'Claps claps',
    'Love it',
    'I am loving it!',
    `It's party time`,
    `Here's my like`,
    `You're a unicorn`,
    'You deserve a trophy!',
    'Take my money',
    'Fly high',

  const toggleBtn = document.querySelector(
    '[aria-label="Toggle reaction modal"]'

  if (!toggleBtn) {
    buttons.forEach((button) =>
  } else {;
    buttons.forEach((button) =>


How you can use it?

  • Clone the repo from github.

    git clone
  • Go to chrome extensions chrome://extensions

  • Enable Developer mode image.png
  • Click Load unpacked. image.png
  • Select the folder you recently cloned
  • Pin the extension image.png
  • Now react on your favourite hashnode articles in a snap by click on the extension icon and click on Click to react. image.png


  • Thanks to Lalit for the title and subtitle of this blog.
  • Thanks to James Q Quick for the amazing video
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