sticky navbar on scroll reactJS

#react #javascript #help

Basically showing how you could achieve the bellow Navbar in react .

firstly you need to create a file then name it Navbar,
add
import from '.Navbar'
on your App or Home component,
then go to the Navbar page you created and paste the below code

import React from 'react'
import './Navbar.css'
class Navbar extends React.Component {
  listener = null;
  state = {
    nav:false
  }
  componentDidMount() {
     window.addEventListener("scroll", this.handleScroll);
   }
   componentWillUnmount() {
      window.removeEventListener('scroll');
    }
   handleScroll= () => {
     if (window.pageYOffset > 140) {
         if(!this.state.nav){
           this.setState({ nav: true });
         }
     }else{
         if(this.state.nav){
           this.setState({ nav: false });
         }
     }

   }

  render(){
  return (
    <div>
    <div className={`Nav ${this.state.nav && 'Nav__black'}`}>
    <img src='imgleftlink'/>
    <img src='imgrightlink' />
    </div>
    </div>
  );}
}
export default Navbar

create a css file and paste the bellow code for css , edit header color to your taste

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.Nav {
  margin-left: -40px;
  position: fixed;
  z-index: 2;
}
img ~ img  {
  position: fixed;
  right: 10px;
  top:8px;
}
.Nav__logo{
  margin-top: 12px;
}
.Nav__black{
  z-index: 2;
  background: rgba(0, 0, 0, 0.95);
  width: 100%;
}