<script src="lodash.js"></script>
var array = [Array(100000).keys()];
array.forEach(n => n*2)
_.forEach(array,n => n*2)
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Array.prototype.forEach | |
Lodash forEach |
Test name | Executions per second |
---|---|
Array.prototype.forEach | 24176.9 Ops/sec |
Lodash forEach | 2341.4 Ops/sec |
I'll break down the explanation into sections to help you understand what's being tested, the options compared, their pros and cons, and other considerations.
What is being tested?
The benchmark measures the performance difference between using the built-in Array.prototype.forEach
method in JavaScript (specifically, iterating over an array and multiplying each element by 2) versus using the _.forEach
function from the Lodash library for the same operation.
In other words, the test checks how efficient the two approaches are when executing a similar task: iterating over an array and performing a calculation on each element.
Options compared
There are two main options being compared:
Pros and Cons
Here's a brief summary of the pros and cons of each approach:
Other considerations
The test also considers factors such as:
Library and syntax
The Lodash library is a popular utility library that provides a set of functions for common tasks, such as array manipulation, string formatting, and more. In this case, the _.forEach
function is used to iterate over an array and execute a callback function for each element.
There's no special JavaScript feature or syntax being tested in this benchmark, just standard JavaScript methods and libraries.
Alternatives
If you're looking for alternative approaches, consider:
Keep in mind that the best approach depends on the specific requirements and constraints of your project.