how to integrate paypal payment gateway in react js code example

Example: paypal subscription based payout api reactjs

import React from 'react';import ReactDOM from 'react-dom'; class PaypalButton extends React.Component {  constructor(props) {    super(props);     this.state = {      showButton: false,    };  }   componentDidMount() {    // Todo  }   componentWillReceiveProps(nextProps) {    // Todo  }   render() {    // Todo  }} export default PaypalButton;