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Introduction to CSS Loader

CSS Loader being a front-end component is defined as an npm Module that collects all the CSS files referenced in the working application to help webpack and consolidate into a string. This compiles an application of a particular resource as a JavaScript module (CSS to JS file). In simple terms, a CSS loader is an animation that indicates to the website that the page is loading and requests the user to wait momentarily. It is responsible for fetching styles from the corresponding CSS files. If no CSS loader is included in the browser, the page may appear unresponsive. Loader helps load the styles we require to the different sections of our application with added modular and easy-use benefits.

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Syntax

npm install –save-dev CSS-loader Working on CSS Loader

We can make it with a div that makes the entire screen with a white animated page loader with none set as a display property.

Here in our article, I have installed chúng tôi to get npm installed.

We use the React Components to build a CSS module incorporating all style sheets. We need to load the loaders in the Web Pack to do so. CSS modules make it easy to name classes without global issues. Loading this CSS into the local component requires import. To work with the js module, these are the following step.

1. Getting started

It begins to install a css-loader. here comes the syntax path

npm install –save-dev css-loader

The following snippets show the installation of the files

The following snipes offer CSS extraction from the Loader.

Testing the Package (CSS)

And for the production

<code

2. Defining a CSS file

.dd { color :violet; }

3. Webpack config -Plugin – To interpret all the CSS files

import css from 'demo.css' module.exports = { module: { rules: [ { test: /.css$/i, use: ['style-loader', 'css-loader'], }, ], }, };

5. String

module.exports = { module: { rules: [ { test: /.css$/i, loader: 'css-loader', options: { modules: 'global', }, }, ], }, }; Examples of CSS Loader

Here are the following examples mentioned below

Example #1

The html file shows how the CSS files enable a style by calling the respective class to load the process with animation.

load.html Code:

h1{ color:green; } div{ display: block; position: absolute; width: 12px; height: 12px; right: calc(60% – 1em); border-radius: 1.1em; transform-origin: 1em 1em; animation: rotate; animation-iteration-count:infinite; animation-duration: 2s; } @keyframes rotate { 0% { transform: rotate(0deg); } 100% { transform: rotate(180deg); } } .aa { animation-delay: 0.2s; background-color: yellow; } .bb { animation-delay: 0.3s; background-color: pink; } .cc { animation-delay: 0.4s; background-color: red; } .dd { animation-delay: 0.5s; background-color: blue; } .ee { animation-delay: 0.6s; background-color: brown; }

Output:

We have seen simple preloading sequence animations using CSS loader, making an easy transition.

Example #2

Code:

h1{ text-align:center; } .load1 { border: 19px solid #008080; position:absolute; border-radius: 49%; border-top: 21px solid rose; border-bottom: 21px solid rose; width: 140px; height: 140px; animation: spin 3s linear infinite; } .load2 { border: 20px solid #008080; position:absolute; left:45%; border-radius: 49%; border-top: 22px solid rose; border-bottom: 22px solid green; border-right: 22px solid red; width: 140px; height: 140px; animation: spin 3s linear infinite; } .load3 { border: 20px solid #FF6347; position:absolute; left:75%; border-radius: 49%; border-top: 21px solid rose; border-bottom: 21px solid green; border-right: 21px solid red; border-left:21px solid blue; width: 150px; height: 150px; animation: spin 3s linear infinite; } @keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

What we have done here is we have created an easy position type that has absolute. We make the circle by specifying the width and height dimensions and applying a radius value to achieve rounded edges. We are next assigning a different color for the border. And now, we implement Animation keyframes to have a rotation.

Example #3

Code:

Output:

Example #4

With four different colors used for loading

Code:

h1{ color:purple; } .loadd { display: block; position: absolute; width: 95px; height: 15px; right: calc(55% – 2em); transform-origin: 3px 13px; animation: rotate; animation-iteration-count: infinite; animation-duration: 3.1s; } @keyframes rotate { from { transform: rotateY(45deg); } to { transform: rotateY(360deg); } } .a1 { animation-delay: 0.2s; background-color: #C71585; } .a2 { animation-delay: 0.3s; background-color: #20B2AA; } .a3 { animation-delay: 0.4s; background-color: #DC143; } .a4 { animation-delay: 0.4s; background-color: #0000FF ; } .a5 { animation-delay: 0.5s; background-color: #808000; }

Output:

Conclusion

As we know that CSS is helpful in styling, and we can add animations or any other motion pictures on a particular web page. Therefore, when we emphasize a loader on a web page, we enable users to wait for a few seconds until the entire page is loaded. This loader enhances the user experience by providing a simple animation while the page is loading and adds necessary visual elements to the respective projects.