freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/basic-data-structures/copy-array-items-using-slice/index.md

---
title: Copy Array Items Using slice()
---
# Copy Array Items Using slice()

- the `slice()` function must be used to return an array consisting of only `warm` and `sunny`.
- Therefore, two parameters must be passed to the `slice()` function. The first parameter must be the index you would like the substring to start at. The second parameter must be the index at which the substring ends. 
- Note: The second parameter will end the substring at that exact index.
## Example:
```javascript
return arr.slice(1, 4);
/* This will return a substring consisting of indexs [1,2,3]
    Note: arr[4] is NOT included. */
```

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## Solutions

<details><summary>Solution 1 (Click to Show/Hide)</summary>

```javascript
function forecast(arr) {
  // change code below this line
  return arr.slice(2, 4);
}

// do not change code below this line
console.log(
  forecast(["cold", "rainy", "warm", "sunny", "cool", "thunderstorms"])
);
```
</details>