reactjs classlist remove
import React, { Component } from 'react';
class Arrow extends Component {
  constructor(props) {
    super(props)
    this.state = {
      status: false
    }
  }
  toggleArrow = function() {
    if(this.state.status) {
      //closes it
      document.getElementById('arrow').classlist.remove('arrow-closed');
    } else {
      //open
      document.getElementById('arrow').classlist.add('arrow-closed');
    }
    this.setState({ status: !this.state.status })
  }.bind(this);
  render() {
        return (
            <a id="arrow" onClick={() => this.toggleArrow()}className={`${this.props.className} arrow`}></a>
        )
    }
}
export default Arrow;