默认启动页面index.ets

import  router from '@ohos.router'
import  {BusinessError} from '@ohos.base'@Entry
@Component
struct Index {@State message: string = 'Hello World';build() {Row() {Column() {Text(this.message).fontSize(50).fontWeight(FontWeight.Bold)//添加按钮，以响应用户点击Button(){Text('Next').fontSize(30).fontWeight(FontWeight.Bold)}.type(ButtonType.Capsule).margin({top:20}).backgroundColor('#00D9FFB').width('40%').height('5%')//跳转按钮绑定onclick事件，点击跳转到目标页面.onClick(()=>{console.log(`Succeeded in clicking the 'Next' button.`);router.pushUrl({url:'pages/TargetPage'}).then(()=>{console.info('Succeeded in jumping to the second page.')}).catch((err: BusinessError) => {console.error(`Failed to jump to the second page.Code is ${err.code}, message is ${err.message}`)})})}.width('100%')}.height('100%')}
}

跳转目标页面TargetPage.ets

// 导入页面路由模块
import router from '@ohos.router';
import { BusinessError } from '@ohos.base';@Entry
@Component
struct TargetPage {@State message: string = '鸿蒙小趣';build() {Row() {Column() {Text(this.message).fontSize(50).fontWeight(FontWeight.Bold)Button(){Text('Back').fontSize(25).fontWeight(FontWeight.Bold)}.type(ButtonType.Capsule).margin({top:20}).backgroundColor('#0D9FFB').width('40%').height('5%')// 返回按钮绑定onClick事件，点击按钮时返回到第一页.onClick(()=>{console.info(`Succeeded in clicking the 'Back' button.`)try {// 返回第一页router.back()console.info('Succeeded in returning to the first page.')}catch (err){let code = (err as BusinessError).code;let message = (err as BusinessError).message;console.error(`Failed to return to the first page.Code is ${code}, message is ${message}`)}})}.width('100%')}.height('100%')}
}

运行效果图如下：