class HelloWorldComponent extends React.Component {

  constructor(props){

    super(props);

    this.state = {

      arr: []

    }

  }

​

  generateFilter = (e) => {

    let temp = [];

    temp = this.state.arr;

    if(temp.indexOf(this.state.arr) > -1){

      delete temp[e.target.name]

    }else{

      temp.push(e.target.name);

    }

    this.setState({arr:temp})

    console.log(this.state.arr)

  }

  render() {

    return (      

      <div>

         <input onChange={this.generateFilter} type="checkbox" name="apple"/>

         <input onChange={this.generateFilter} type="checkbox" name="samsung"/>

      </div>    

    );

  }

}

​

React.render(

  <HelloWorldComponent />,

  document.getElementById('react_example')

);