import React from 'react'; export default class Header extends React.Component { render() { const items = [0, 1, 2]; var iconBars = items.map(function (item) { return ( <span className="icon-bar" key={item} /> ); }); return ( <div className="navbar-header"> <button type="button" className="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" > <span className="sr-only">Toggle navigation</span> {{ iconBars }} </button> <a className="navbar-brand visible-xs"> <i className="icon ion-compass" /> Navigation </a> </div> ); } }