base class '${superClassName}'`;semanticErrors.push(path.get('key').buildCodeFrameError(errorMessage,Error));Error.stackTraceLimit=tmp;}}});}state.file.set('errors',semanticErrors);}},post(file){console.log(file.get('errors'));}}});module.exports=overrideCheckerPlugin; github 链接 测试效...
constsuperClass=path.node.superClass; if(superClass) { constsuperClassPath=path.scope.getBinding(superClass.name).path; constallMethodNames=getAllClassMethodNames(superClassPath); path.traverse({ ClassMethod(path) { if(path.node.override){ constmethodName=path.get('key').toString(); constsuperC...
export class Animal { public say():void{ console.log("I am a Animal"); } } export class Dog extends Animal { public override say():void{ console.log("I am a Dog"); } } let animal: Animal = new Dog(); animal.say(); // output: I am a Dog let dog: Dog = new Dog();...
classSomeComponent{setVisible(value:boolean) {// ...} }// 覆盖父类没有的方法,会看到错误提示信息 ✅classSpecializedComponentextendsSomeComponent{ overrideshow() {// This member cannot have an 'override' modifier because it is not declared in the base class 'SomeComponent'.} } https://www....
首先,我们来看下这个修饰符的作用:被 override 标示的方法必须得在父类中存在,否则会报错。 classAnimal{getName() {return''; } }classDogextendsAnimal{overridebak() {return'wang'; }overridegetName() {return'wang'; } } AI代码助手复制代码
functioncreateState(id:string,name:string,age:number){// 继承 BaseObject 再定义一个classclassmyStateextendsBaseObject{constructor(name:string,age:number){// 调用父类的 constructor()super(name,age)}// 使用 override 覆盖父类 $idoverrideget$id(){returnid}}const_state=newmyState(name,age)constst...
在TypeScript 中,子类可以重写(override)父类的方法,以实现自己的行为。重写父类方法的过程是:子类定义与父类相同的方法名和参数列表,然后在子类中重新实现父类方法的行为。覆盖父类的成员函数可以使用super关键字来调用父类的成员函数。以下是一个简单的示例: ...
classAnimal{name:string;constructor(name:string){this.name=name;}sayHello(){console.log(`Hello, I'm${this.name}`);}}classDogextendsAnimal{breed:string;constructor(name:string,breed:string){super(name);this.breed=breed;}bark(){console.log('Woof!');}}constdog=newDog('Buddy','Labrador');...
functioncreateState(id:string,name:string,age:number){// 继承 BaseObject 再定义一个classclassmyStateextendsBaseObject{constructor(name:string,age:number){// 调用父类的 constructor()super(name,age)}// 使用 override 覆盖父类 $idoverrideget$id(){returnid}}const_state=newmyState(name,age)constst...
classHorseextendsAnimal{constructor(name:string){super(name);}move(distanceInMeters=45){console.log("Galloping...");super.move(distanceInMeters);}} 通过sub class和base class同名的方法,会重载(override)父类的方法 classHorseextendsAnimal{constructor(name:string){super(name);}// move 重载 父类的mo...