How can Node.js and Express be used to conceal Javascript code on the backend?

I'm a beginner when it comes to Node and Express. I have a query regarding how to securely hide Javascript code on the backend. Currently, I am working with Node.js and Express. My goal is to prevent users from easily accessing the code through browser inspection. I have created a basic script and included the link in index.html, within the head tags, like so:

<script src ="/javascripts/test.js"></script>
. Everything seems to be functioning correctly.

Upon attempting to inspect the page using Google, I noticed that the code can be easily viewed by anyone.

I suspect this is due to using test.js on the frontend side of the browser. How can I incorporate it into the backend to ensure that the code remains secure? What steps should I take to achieve this? Could you please provide me with an explanation? Thank you

Just for reference, the script looks like this:

 function myFunction() {
    alert("I am an alert box!");
  }

Additionally, here's how I implemented it on the HTML button:

<button onclick="myFunction()" type="button" class="btn btn-primary">Primary</button>

Answer №1

The function alert, as outlined in the HTML specification, prompts the browser to display a modal message box using its native UI. This feature is accessible via client-side JavaScript.

In contrast, Node.js permits execution of JavaScript on the server side but restricts usage to JavaScript language elements and Node.JS API exclusively, along with certain third-party code subjected to similar restrictions.

Web APIs or other features specific to web browsers are incompatible with Node.js, unless they have explicit equivalents in the Node environment, due to restricted access by the server.

Displaying a modal message box in the browser is fundamentally a browser-specific task, hence an equivalent API for Node.JS does not exist.

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