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What is the output of the following code snippet?
let arr = [1, 2, 3, 4, 5];
console.log(arr.slice(1, 3));
let arr = [1, 2, 3, 4, 5];
console.log(arr.slice(1, 3));
- a)[2, 3]
- b)[1, 2]
- c)[3, 4]
- d)[2, 4]
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
What is the output of the following code snippet?let arr = [1, 2, 3, 4...
Output:
The output of the code snippet is [2, 3].
Explanation:
The code snippet is using the slice() method to extract a portion of the array arr starting from index 1 (inclusive) and ending at index 3 (exclusive).
Here are the steps performed by the slice() method:
1. The slice() method creates a new array by copying a portion of the original array.
2. The first argument of the slice() method specifies the starting index from where the portion should be extracted.
3. The second argument specifies the ending index (exclusive) up to which the portion should be extracted.
4. In the given code snippet, arr.slice(1, 3) extracts the elements from index 1 (inclusive) to index 3 (exclusive).
5. The elements at index 1 and index 2 are 2 and 3 respectively.
6. Therefore, the extracted portion of the array is [2, 3].
Visualization:
To better understand the code snippet, let's visualize the array and the portion extracted using the slice() method:
Original Array: [1, 2, 3, 4, 5]
slice(1, 3):
- Start extracting from index 1 (inclusive)
- Stop extracting at index 3 (exclusive)
Extracted Portion: [2, 3]
Summary:
The slice() method is used to extract a portion of an array. In the given code snippet, the portion extracted from the array [1, 2, 3, 4, 5] using slice(1, 3) is [2, 3].
The output of the code snippet is [2, 3].
Explanation:
The code snippet is using the slice() method to extract a portion of the array arr starting from index 1 (inclusive) and ending at index 3 (exclusive).
Here are the steps performed by the slice() method:
1. The slice() method creates a new array by copying a portion of the original array.
2. The first argument of the slice() method specifies the starting index from where the portion should be extracted.
3. The second argument specifies the ending index (exclusive) up to which the portion should be extracted.
4. In the given code snippet, arr.slice(1, 3) extracts the elements from index 1 (inclusive) to index 3 (exclusive).
5. The elements at index 1 and index 2 are 2 and 3 respectively.
6. Therefore, the extracted portion of the array is [2, 3].
Visualization:
To better understand the code snippet, let's visualize the array and the portion extracted using the slice() method:
Original Array: [1, 2, 3, 4, 5]
slice(1, 3):
- Start extracting from index 1 (inclusive)
- Stop extracting at index 3 (exclusive)
Extracted Portion: [2, 3]
Summary:
The slice() method is used to extract a portion of an array. In the given code snippet, the portion extracted from the array [1, 2, 3, 4, 5] using slice(1, 3) is [2, 3].
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Community Answer
What is the output of the following code snippet?let arr = [1, 2, 3, 4...
The 'slice()' method returns a new array containing the elements from index 1 (inclusive) to index 3 (exclusive). In this case, it returns [2, 3].
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