Question

Ionic4项目中我们可以使用Ionic4底部Tabs组件组件ion-tab对项目进行布局。

ion-tab官方文档地址:https://ionicframework.com/docs/api/tab

The tab component is a child component of tabs. Each tab can contain a top level navigation stack for an app or a single view. An app can have many tabs, all with their own independent navigation.

See the tabs documentation for more details on configuring tabs.

ion-tab　属性(Properties)

component
Description	The component to display inside of the tab.
Attribute	component
Type	Function | HTMLElement | null | string | undefined
tab
Description	A tab id must be provided for each ion-tab. It's used internally to reference the selected tab or by the router to switch between them.
Attribute	tab
Type	string

ion-tab　内置方法(Methods)

setActive
Description	Set the active component for the tab
Signature	setActive() => Promise<void>