Question

有人可以协助我吗？我正在尝试使用Cat过滤所有记录。但是我的方法不起作用。请参见下面的代码

    const people = [
      { name: "Kerrie", skills: ["Cat", "Rat", "Orange"] },
      { name: "Mario", skills: ["Mouse", "Dog"] },
      { name: "Jacquline", skills: ["Cat", "Pineapple"] },
      { name: "Kathy", skills: ["Cat", "Java"] },
      { name: "Anna", skills: ["Cat", "Dog"] },
      { name: "Matt", skills: ["Apple", "Dog"] },
      { name: "Matt", skills: ["Apple", "Mango", "Rat"] },
    ];

//code below is what I am trying to use to filter
    people.indexOf("Cat")
    }

Answer 1

简单。您想为.filter数组中的技能属性包括"Cat"的元素：

 const people = [
      { name: "Kerrie", skills: ["Cat", "Rat", "Orange"] },
      { name: "Mario", skills: ["Mouse", "Dog"] },
      { name: "Jacquline", skills: ["Cat", "Pineapple"] },
      { name: "Kathy", skills: ["Cat", "Java"] },
      { name: "Anna", skills: ["Cat", "Dog"] },
      { name: "Matt", skills: ["Apple", "Dog"] },
      { name: "Matt", skills: ["Apple", "Mango", "Rat"] },
    ];

let result = people.filter( elem => elem.skills.includes("Cat") );
console.log(result)

Answer 2

const people = [
      { name: "Kerrie", skills: ["Cat", "Rat", "Orange"] },
      { name: "Mario", skills: ["Mouse", "Dog"] },
      { name: "Jacquline", skills: ["Cat", "Pineapple"] },
      { name: "Kathy", skills: ["Cat", "Java"] },
      { name: "Anna", skills: ["Cat", "Dog"] },
      { name: "Matt", skills: ["Apple", "Dog"] },
      { name: "Matt", skills: ["Apple", "Mango", "Rat"] },
    ];
    
let answer = people.filter(x=>x.skills.some(x=> x === "Cat"));

console.log(answer)

因此，要进行过滤，Array#filter是必需的。根据条件，您可以使用some或indexOf或includes

尝试过滤出对象中的值

2 个答案: