在HarmonyOS NEXT开发中ArkTS 关于重载的实现方式？

Question

在HarmonyOS NEXT开发中ArkTS 关于重载的实现方式？

Answer 1

可以使用可选参数实现重载效果：

export class Test { 
  private name: string = ''; 
  private age: number; 
 
  constructor(name?: string, age: number = 18) { 
    if (name) { 
      this.name = name; 
    } 
    this.age = age; 
  } 
 
  getAge(): number { 
    return this.age; 
  } 
 
  getName() { 
    return this.name; 
  } 
 
  hasSkill(skills?: Array<string> | string): string { 
    let skillsMsg = '阅读'; 
    if (skills) { 
      if (typeof skills === 'string') { 
        skillsMsg += skills; 
      } else { 
        skills.forEach(s => { 
          skillsMsg += '、' + s; 
        }); 
      } 
    } 
    return '拥有的技能为：' + skillsMsg; 
  } 
} 
 
// 调用示例 
let t1 = new Test(); 
let t2 = new Test('t2Name'); 
let t3 = new Test('t3Name', 100); 
 
console.log(`t1# name: ${t1.getName()} , age: ${t1.getAge()}, 能力有: ${t1.hasSkill()}`); 
console.log(`t2# name: ${t2.getName()} , age: ${t2.getAge()}, 能力有: ${t2.hasSkill('算数')}`); 
console.log(`t3# name: ${t3.getName()} , age: ${t3.getAge()}, 能力有: ${t3.hasSkill(['唱歌', '跳舞'])}`)