Headline
Headline shows a single number or compares two numbers.
Headlines have two sections: Measure (primary) and Measure (secondary). You can add one item to each section. If you add two items, the headline also displays the change in percent.

Structure
import { Headline } from '@gooddata/react-components';
<Headline
    projectId={<workspace-id>}
    primaryMeasure={<measure>}
    sdk={<sdk>}
/>
Example
Headline with a single measure (primary measure)
const measure = {
    measure: {
        localIdentifier: 'franchiseFeesIdentifier',
        definition: {
            measureDefinition: {
                item: {
                    identifier: franchiseFeesIdentifier
                }
            }
        }
    }
};
<Headline
    projectId={workspaceId}
    primaryMeasure={measure}
/>
Headline with two measures (primary and secondary measures)
const measure = {
    measure: {
        localIdentifier: 'franchiseFeesIdentifier',
        definition: {
            measureDefinition: {
                item: {
                    identifier: franchiseFeesIdentifier
                }
            }
        }
    }
};
const secondaryMeasure = {
    measure: {
        localIdentifier: 'franchiseFeesAdRoyaltyIdentifier',
        definition: {
            measureDefinition: {
                item: {
                    identifier: franchiseFeesAdRoyaltyIdentifier
                }
            }
        }
    }
};
<Headline
    projectId={workspaceId}
    primaryMeasure={measure}
    secondaryMeasure={secondaryMeasure}
/>
Properties
| Name | Required? | Type | Description | 
|---|---|---|---|
| projectId | true | string | The workspace ID | 
| primaryMeasure | true | Measure | The definition of the primary measure | 
| secondaryMeasure | false | Measure | The definition of the secondary measure | 
| filters | false | Filter[] | An array of filter definitions | 
| locale | false | string | The localization of the chart. Defaults to en-US. For other languages, see the full list of available localizations. | 
| drillableItems | false | DrillableItem[] | An array of points and attribute values to be drillable. | 
| sdk | false | SDK | A configuration object where you can define a custom domain and other API options | 
| ErrorComponent | false | Component | A component to be rendered if this component is in error state. See ErrorComponent. | 
| LoadingComponent | false | Component | A component to be rendered if this component is in loading state. See LoadingComponent. | 
| onError | false | Function | A callback when the component updates its error state | 
| onExportReady | false | Function | A callback when the component is ready for exporting its data | 
| onLoadingChanged | false | Function | A callback when the component updates its loading state |