如何防止直接在js/ts类中更新属性？

Question

如果两个数组包含相同数量的项目，那么您可以使用普通的 for 循环来访问具有相同索引的每个项目，如下所示 -let home_team = ["A", "B", "C"];let away_team = ["D", "E", "F"];for(let i=0; i<home_team.length; i++){  console.log(`${home_team[i]} VS ${away_team[i]}`);}展开片段或者，您也可以在 for 循环中使用多个计数器，如下所示（尽管您现在不需要这个 -let home_team = ["A", "B", "C"];let away_team = ["D", "E", "F"];for(let i=0,j=2; i<home_team.length; i++, j--){  console.log(`${home_team[i]} VS ${away_team[j]}`);}

Answer 1

请将所有私有变量放入构造函数中。

class Animal {

  constructor() {

    let privateAttribute = 'default';

    this.setPrivateAttribute = newValue => {

      privateAttribute = newValue

    }

    this.getPrivateAttribute = () => privateAttribute;

  }

}

let newAnimal = new Animal()

// get variable value

newAnimal.getPrivateAttribute()

// Set new Value

newAnimal.setPrivateAttribute('New Value')