new Array(0, 1, 2)
[0, 1, 2]
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
new Array() | |
spread |
Test name | Executions per second |
---|---|
new Array() | 12193905.0 Ops/sec |
spread | 186223104.0 Ops/sec |
Let's break down the provided JSON and explain what's being tested.
Benchmark Definition
The benchmark is defined by two different approaches to create filled arrays:
new Array(0, 1, 2)
[0, 1, 2]
These two approaches are compared to measure their performance differences.
Options Compared
The two options being compared are:
new Array(0, 1, 2)
) to create a filled array.[0, 1, 2]
) to create a filled array.Pros and Cons of Each Approach
Constructor Syntax (New Array)
Pros:
Cons:
Spread Operator ([0, 1, 2])
Pros:
Cons:
Library Used: None
There is no library used in this benchmark. Both approaches are built-in JavaScript constructs.
Special JS Feature/Syntax:
No special JavaScript features or syntax are mentioned in the provided JSON.
Other Alternatives
Some alternative approaches to create filled arrays could be:
Array.from()
with an array of initial values (e.g., [...new Array(3)].map((_, i) => i)
).let arr = []; for (let i = 0; i < 3; i++) { arr.push(i); }
).These alternatives might offer performance advantages or more readable code, but they are not explicitly tested in this benchmark.
Overall, the benchmark provides a simple comparison between two common approaches to create filled arrays in JavaScript, highlighting their pros and cons.