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What is the output of the following code?
var arr = [1, 2, 3, 4, 5];
arr.splice(2, 1);
console.log(arr);
var arr = [1, 2, 3, 4, 5];
arr.splice(2, 1);
console.log(arr);
- a)[1, 2, 3, 4, 5]
- b)[1, 2, 4, 5]
- c)[1, 2, 3, 5]
- d)[1, 2, 4]
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
What is the output of the following code?var arr = [1, 2, 3, 4, 5];arr...
The 'splice()' method removes elements from an array, starting from the specified index. In this case, it removes one element at index 2.
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Community Answer
What is the output of the following code?var arr = [1, 2, 3, 4, 5];arr...
Explanation:
The given code snippet demonstrates the use of the `splice()` method in JavaScript to remove elements from an array.
Code Explanation:
1. The variable `arr` is initialized as an array `[1, 2, 3, 4, 5]`.
2. The `splice()` method is called on the `arr` array with two arguments: the starting index (`2`) and the number of elements to be removed (`1`).
3. This will remove one element from the array starting from index `2`.
4. The modified array is then logged to the console using `console.log(arr)`.
5. The output of the code will be `[1, 2, 4, 5]`.
Step-by-step Execution:
1. Initial array: `[1, 2, 3, 4, 5]`
2. The `splice()` method removes one element from index `2`, which is `3`.
3. Modified array: `[1, 2, 4, 5]`
4. The modified array is printed to the console: `[1, 2, 4, 5]`
Explanation of the Output:
The output of the code is `[1, 2, 4, 5]` because the `splice()` method removes elements from an array and modifies it in place. In this case, it removes one element from the array starting from index `2`, resulting in the element `3` being removed. Therefore, the modified array contains the elements `[1, 2, 4, 5]`.
Key Points:
- The `splice()` method is used to remove elements from an array.
- It modifies the original array and returns the removed elements as a new array (if any).
- The first argument of `splice()` specifies the starting index from where elements should be removed.
- The second argument of `splice()` specifies the number of elements to be removed.
- In this case, `arr.splice(2, 1)` removes one element starting from index `2` in the array.
The given code snippet demonstrates the use of the `splice()` method in JavaScript to remove elements from an array.
Code Explanation:
1. The variable `arr` is initialized as an array `[1, 2, 3, 4, 5]`.
2. The `splice()` method is called on the `arr` array with two arguments: the starting index (`2`) and the number of elements to be removed (`1`).
3. This will remove one element from the array starting from index `2`.
4. The modified array is then logged to the console using `console.log(arr)`.
5. The output of the code will be `[1, 2, 4, 5]`.
Step-by-step Execution:
1. Initial array: `[1, 2, 3, 4, 5]`
2. The `splice()` method removes one element from index `2`, which is `3`.
3. Modified array: `[1, 2, 4, 5]`
4. The modified array is printed to the console: `[1, 2, 4, 5]`
Explanation of the Output:
The output of the code is `[1, 2, 4, 5]` because the `splice()` method removes elements from an array and modifies it in place. In this case, it removes one element from the array starting from index `2`, resulting in the element `3` being removed. Therefore, the modified array contains the elements `[1, 2, 4, 5]`.
Key Points:
- The `splice()` method is used to remove elements from an array.
- It modifies the original array and returns the removed elements as a new array (if any).
- The first argument of `splice()` specifies the starting index from where elements should be removed.
- The second argument of `splice()` specifies the number of elements to be removed.
- In this case, `arr.splice(2, 1)` removes one element starting from index `2` in the array.
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What is the output of the following code?var arr = [1, 2, 3, 4, 5];arr.splice(2, 1);console.log(arr);a)[1, 2, 3, 4, 5]b)[1, 2, 4, 5]c)[1, 2, 3, 5]d)[1, 2, 4]Correct answer is option 'B'. Can you explain this answer?
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