1, 看效果

2, 直接cv代码就可以 

@Preview
@Entry
@Component
struct Setting {@Statephone:string = '15555555555'maskPhoneNumber(phone:string){const start = phone.substring(0,3)const end = phone.substring(7)return `${start}****${end}`}build() {Column(){Text(this.maskPhoneNumber(this.phone)).fontSize(30)}.height('100%').width('100%').justifyContent(FlexAlign.Center)}
}