var s = "2021-06-03T00:00:00.000Z";
var n = s.split("T")[0];
var n = s.substring(0, 10);
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Array.split | |
Substring |
Test name | Executions per second |
---|---|
Array.split | 6594958.5 Ops/sec |
Substring | 16607315.0 Ops/sec |
Let's dive into the world of JavaScript microbenchmarks!
Benchmark Overview
The provided benchmark is designed to compare the performance of two approaches for extracting a date from a string:
Array.split
: Splits the input string using the substring "T"
as the separator and takes the first element (index 0) of the resulting array.Substring
: Uses the substring
method with a start index of 0 and a length of 10 to extract the date part from the original string.Options Compared
In this benchmark, we have two options being compared:
split
method followed by array indexing ( [0]
) to extract the desired substring.substring
method with a specific start and length parameters.Pros and Cons
Pros:
Cons:
Pros:
Cons:
Library and Special JS Feature
None of the test cases use any libraries. The only special feature mentioned is the use of a specific date format ("2021-06-03T00:00:00.000Z"
), which is a widely used ISO 8601 standard for dates in JavaScript. This might affect the performance or parsing behavior of the benchmark, but it's not related to any specific library.
Other Alternatives
If you're looking for alternative approaches or want to explore other optimizations, here are some options:
Array.split
or Substring
, but also potentially slower and more complex.Keep in mind that these alternatives may have their own trade-offs in terms of readability, maintainability, and performance.