title: React/Redux Component didnt render correctly
body: <p>I am new to Redux , my problem is The Component can not be rendered and no any error msg shows , 
  it shows correctly without applying redux when i just render Option1(variable),anyone help? thankyou !!!! Can anyone solve my problem with some coding example thx!</p>
  
  <p><strong>Action</strong> </p>
  
  <pre><code>function clickRaidoButt(id) {
      return {
          type: 'CLICK_RADIO',
          payload: id
      }
  }
  </code></pre>
  
  <p><strong>Reducers</strong> </p>
  
  <pre><code>function reducreForRadio(state = initialStateForRadio, action) {
      if (typeof state === 'undefined') {
          return 0
      }
  
      var id;
  
      switch(action.type) {
          case 'CLICK_RADIO': {
               return {
                   id: action.payload
               }
          }
          default: {
               return state
          }
      }
  }
  </code></pre>
  
  <p><strong>Component</strong> </p>
  
  <pre><code>var Option1 = React.createClass({
  
  
      render() {
          const { id } = this.props;    
  
          return ( 
              &lt;label&gt;
                  &lt;input  
                      onClick={() =&gt; this.props.clickRaidoButt('option1')}  
                      type="radio" 
                      id="option1" 
                      name="selOption" 
                  /&gt;
              &lt;/label&gt;
          );
      }
  });
  </code></pre>
  
  <p><strong>Mapping</strong></p>
  
  <pre><code>function mapDispatchToPropsForRaidoButt (dispatch) {
      return { 
          clickRaidoButt : (id) =&gt; dispatch(clickRaidoButt(id))
      };
  }
  
  function mapStateToPropsForRaidoButt(state) {  
      return {  
          id: state.reducreForRadio.id
      }  
  }  
  </code></pre>
  
  <p><strong>Connection</strong> </p>
  
  <pre><code>var rootReducer = Redux.combineReducers({
      reducreForAge,
      reducreForButtonGroup2,
      reducreForRadio
  });
  
  const radio1 = connect(mapStateToPropsForRaidoButt,mapDispatchToPropsForRaidoButt)(Option1);
  
  ReactDOM.render(
      &lt;Provider store={store}&gt;
          &lt;radio1/&gt;
      &lt;/Provider&gt;,
      document.getElementById('selOption1')
  );
  </code></pre>