name description usage demo see {@link /docs/components#navigation Navigation Component Docs} see {@link ../NavController/ NavController API Docs} see {@link /docs/api/components/nav/Nav/ Nav API Docs} see {@link /docs/api/components/nav/NavPush/ NavPush API Docs} export class NavParams { hidden param { TODO } data constructor ( public data = { } ) { } param { string } param get ( param ) { return this . data [ param ] ; } }