Javascript - 遍历数组

Question

所以我刚开始学js，做不了这个题：

Create a file named looping-through-arrays.js.

In that file, define a variable named pets that references this array:

['cat', 'dog', 'rat']

Create a for loop that changes each string in the array so that they are plural.

You will use a statement like this inside the for loop:

pets[i] = pets[i] + 's'

我试过类似这样的代码，但显然它不起作用：

let pets = ["cat", "dog", "rat"];
for(let i = 0; i <= pets.length; i++){
  pets[i] = pets[i] + "s";
};
console.log(pets);

Answer 1

//Try this one   
 let pets = ["cat", "dog", "rat"];
    for(let i = 0; i < pets.length; i++){
      pets[i] = pets[i] + "s";
    };
    console.log(pets);