JAVASCRIPT

react-loader-spinner

import React from 'react';
import "react-loader-spinner/dist/loader/css/react-spinner-loader.css";
import Loader from "react-loader-spinner";
import '../style.css';
const LoaderComponent = () => {
    return (
        <div className="loader">
            <Loader
                type="Circles"
                color="#dc1c2c"
                height={50}
                width={100}
                //timeout={1000} //3 secs
            />
        </div>
    );
};

export default LoaderComponent;

style.css
===
.loader {
  position: fixed;
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: bg 1s;
}

install react spinner

npm install --save react-spinners

react spinkit

$ npm install react-spinkit --save

react spinner

import { useState, CSSProperties } from "react";
import ClipLoader from "react-spinners/ClipLoader";

const override: CSSProperties = {
  display: "block",
  margin: "0 auto",
  borderColor: "red",
};

function App() {
  let [loading, setLoading] = useState(true);
  let [color, setColor] = useState("#ffffff");

  return (
    <div className="sweet-loading">
      <button onClick={() => setLoading(!loading)}>Toggle Loader</button>
      <input value={color} onChange={(input) => setColor(input.target.value)} placeholder="Color of the loader" />

      <ClipLoader color={color} loading={loading} cssOverride={override} size={150} />
    </div>
  );
}

export default App;

react-spinners

yarn add react-spinners