InputData.js

import React, { Component } from 'react'

class InputData extends Component {

     render() {
         return(
            <div className="panel-footer">
                <div className="input-group">
                    <input id="btn-input" type="text" className="form-control input-sm" placeholder="Type your message here..." />
                    <span className="input-group-btn">
                        <button className="btn btn-primary btn-sm" id="btn-chat">
                        Send</button>
                    </span>
                </div>
            </div>
         )
     }
}

export default InputData