import React from 'react'; class GridField extends React.Component { constructor(props) { super(props); this.state = { currentObj: 'w', obj: this.props.obj, active: false }; } isActive() { return 'field' + (this.state.active === true ? ' active' : '') + (this.state.active === true && this.state.obj === 'm' ? ' mine' : ''); } render() { return (