React js example. page loader

Preview Code

1. First, we need fresh reactjs setup, and for that, we need to run below commands into out terminal, and also we should have latest node version installed on our system:

npx create-react-app my-awesome-project

cd my-awesome-project

npm start

2. Now we need to run below commands into our project terminal to get bootstrap and related modules into our reactjs application:

npm install [email protected] --save

npm start //For start project again

3. Finally for the main output, we need to add below code into our my-awesome-project/src/App.js file or if you have fresh setup then you can replace my-awesome-project/src/App.js file code with below code:

import React from 'react';
import './App.css';
import 'bootstrap/dist/css/bootstrap.min.css';


function App() {
  
	return (
		<div>
			<div class="loader">
	<div class="loader-centered">
		<div class="object square-one"></div>
		<div class="object square-two"></div>
		<div class="object square-three"></div>
	</div>
</div>
<div class="container bootstrap snippets bootdeys">
    <div class="jumbotron">
    	<h1 id="loading-text">Loading...</h1>
	</div>
</div>
		</div>
	);
}
export default App;

4. Now we need to add below code into our my-awesome-project/src/App.css file :

.loader {
    background-color: rgba(0, 0, 0, 0.95);
    height: 100%;
    width: 100%;
    position: fixed;
    z-index: 999;
    margin-top: 0px;
    top: 0px;
}
.loader-centered {
    position: absolute;
    left: 50%;
    top: 50%;
    height: 200px;
    width: 200px;
    margin-top: -100px;
    margin-left: -100px;
}
.object {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0);
    margin-right: auto;
    margin-left: auto;
    border: 4px solid #fff;
    left: 73px;
    top: 73px;
    position: absolute;
}

.square-one {
    -webkit-animation: first_object_animate 1s infinite ease-in-out;
    animation: first_object_animate 1s infinite ease-in-out;
}
.square-two {
    -webkit-animation: second_object 1s forwards, second_object_animate 1s infinite ease-in-out;
    animation: second_object 1s forwards, second_object_animate 1s infinite ease-in-out;
}
.square-three {
    -webkit-animation: third_object 1s forwards, third_object_animate 1s infinite ease-in-out;
    animation: third_object 1s forwards, third_object_animate 1s infinite ease-in-out;
}

@-webkit-keyframes second_object {
    100% {
        width: 100px;
        height: 100px;
        left: 48px;
        top: 48px;
    }
}
@keyframes second_object {
    100% {
        width: 100px;
        height: 100px;
        left: 48px;
        top: 48px;
    }
}
@-webkit-keyframes third_object {
    100% {
        width: 150px;
        height: 150px;
        left: 23px;
        top: 23px;
    }
}
@keyframes third_object {
    100% {
        width: 150px;
        height: 150px;
        left: 23px;
        top: 23px;
    }
}

@-webkit-keyframes first_object_animate {
    0% {
        -webkit-transform: perspective(100px);
    }
    50% {
        -webkit-transform: perspective(100px) rotateY(-180deg);
    }
    100% {
        -webkit-transform: perspective(100px) rotateY(-180deg) rotateX(-180deg);
    }
}

@keyframes first_object_animate {
    0% {
        transform: perspective(100px) rotateX(0deg) rotateY(0deg);
        -webkit-transform: perspective(100px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        transform: perspective(100px) rotateX(-180deg) rotateY(0deg);
        -webkit-transform: perspective(100px) rotateX(-180deg) rotateY(0deg);
    }
    100% {
        transform: perspective(100px) rotateX(-180deg) rotateY(-180deg);
        -webkit-transform: perspective(100px) rotateX(-180deg) rotateY(-180deg);
    }
}

@-webkit-keyframes second_object_animate {
    0% {
        -webkit-transform: perspective(200px);
    }
    50% {
        -webkit-transform: perspective(200px) rotateY(180deg);
    }
    100% {
        -webkit-transform: perspective(200px) rotateY(180deg) rotateX(180deg);
    }
}

@keyframes second_object_animate {
    0% {
        transform: perspective(200px) rotateX(0deg) rotateY(0deg);
        -webkit-transform: perspective(200px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        transform: perspective(200px) rotateX(180deg) rotateY(0deg);
        -webkit-transform: perspective(200px) rotateX(180deg) rotateY(0deg);
    }
    100% {
        transform: perspective(200px) rotateX(180deg) rotateY(180deg);
        -webkit-transform: perspective(200px) rotateX(180deg) rotateY(180deg);
    }
}

@-webkit-keyframes third_object_animate {
    0% {
        -webkit-transform: perspective(300px);
    }
    50% {
        -webkit-transform: perspective(300px) rotateY(-180deg);
    }
    100% {
        -webkit-transform: perspective(300px) rotateY(-180deg) rotateX(-180deg);
    }
}

@keyframes third_object_animate {
    0% {
        transform: perspective(300px) rotateX(0deg) rotateY(0deg);
        -webkit-transform: perspective(300px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        transform: perspective(300px) rotateX(-180deg) rotateY(0deg);
        -webkit-transform: perspective(300px) rotateX(-180deg) rotateY(0deg);
    }
    100% {
        transform: perspective(300px) rotateX(-180deg) rotateY(-180deg);
        -webkit-transform: perspective(300px) rotateX(-180deg) rotateY(-180deg);
    }
}

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