para-bridge-demo/src/client/modules/plugin_bar/set_navbar/navbar-with-callback.md

a bridge api for js-ios/andriod rest

``` tsx
import { setNavbar, DisplayType, ILeft, ICenter, IRight } from '../../../../plugins/bar/set-navbar';

// 设置标题栏带CALLBACK
public componentDidMount() {
  const leftArea: ILeft = {
    left: { tagName: 'left_left', type: DisplayType.Icon, value: iconDarkBack },
  };
  const centerArea: ICenter = {
    left: { tagName: 'center_left', type: DisplayType.Text, value: '标题栏带回调测试' },
  };
  const rightArea: IRight = {
    left: { tagName: 'right_left', type: DisplayType.Icon, value: iconDarkService },
    right: { tagName: 'right_right', type: DisplayType.Icon, value: iconDarkMessage },
  };
  setNavbar({ left: leftArea, center: centerArea, right: rightArea }, (err, result) => {
    if (err) {
      alert(JSON.stringify(err));
    } else {
      alert(JSON.stringify(result));
    }
  });
}
```