不应显式调用Setter(和getter(。当您为属性分配值时(即，当您执行
我不知道如何在构造函数中使用setter，我想在设置字段之前验证字段，我想通过构造函数来做到这一点，所以我要做的是：
class Person {
private _name: string;
constructor(newName: string) {
// this.name(..) gives error, This expression is not callable. Type 'String' has no call signatures.
this._name = this.name(newName);
}
get name(): string {
return this._name;
}
set name(newName: string) {
if (newName.length > 2 && newName.length < 10) {
this._name = newName;
} else {
throw new RangeError("Must be between 2 and 10 characters of length");
}
}
}
所以我可以简单地做：
const George = new Person("George")
this.name = value;时(，setter会自动调用：
class Person {
private _name = '';
constructor(newName: string) {
this.name = newName
}
get name(): string {
return this._name;
}
set name(newName: string) {
if (newName.length > 2 && newName.length < 10) {
this._name = newName;
} else {
throw new RangeError("Must be between 2 and 10 characters of length");
}
}
}
console.log(new Person('George').name);