How long does it take for node and express to load classes in milliseconds

Currently, I am utilizing node express without the use of a template engine. Instead, I am creating my HTML file and sending it through response.send(template); which has been working well for me thus far.

However, as I begin incorporating more complex tags like checkboxes with multiple classes, I have noticed a slight delay in loading these classes when accessing the route in the browser. This results in the checkbox initially appearing before transforming into a button after a few milliseconds. While this timing issue may seem minimal, I am wondering if there is a way to preload the classes before displaying the page?

Are template engines such as handlebars or pug capable of addressing this particular feature?

I would greatly appreciate any guidance on where to focus my attention. Thank you!

node.jsexpresshandlebars.js

Answer №1

Utilizing a template engine such as ejs or pug, enables you to leverage the res.render(...) function. This function facilitates retrieving data from the server side and sending it to the client alongside the page content.

For instance:

const express = require('express');
const app = express();

app.use('view engine', 'ejs'); // Specify your preferred view engine here

app.get('/path/to/my/page', function(req, res) {
    // Retrieve data
    res.render('example', { data: 'my-found-data' }); // Render the 'example' template with the fetched data
}

For more detailed information on utilizing template engines, refer to the official ExpressJS documentation available at:

https://expressjs.com/en/guide/using-template-engines.html

Answer №2

Can you explain what is meant by classes in this context?

Is there a way to preload the classes before displaying the page?

Are you referring to CSS classes? If so, you can include a link to load the CSS in the header of the HTML document where it's being used.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Authorization Required</title>
  <link rel="stylesheet" href="/assets/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
  <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
  <link rel="icon" href="/favicon.ico" type="image/x-icon">
  <meta name="description" content="">
  <meta name="Keywords" content="">
  <meta name="robots" content="noindex">
</head>
<body>

For example:

<link rel="stylesheet" href="/assets/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">

This code snippet loads bootstrap.min.css from /assets/bootstrap.min.css, and since it's placed in the header section of the page, all CSS classes are loaded before the browser begins rendering the page, ensuring proper display.

For more information on loading CSS, visit https://developer.mozilla.org/en-US/docs/Learn/Getting_started_with_the_web/CSS_basics.

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