<script src="lodash.js"></script>
var array = [Array(100000).keys()];
array.map(n => n*2)
_.map(array,n => n*2)
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Array.prototype.map | |
Lodash map |
Test name | Executions per second |
---|---|
Array.prototype.map | 1297.2 Ops/sec |
Lodash map | 1541.4 Ops/sec |
Let's break down the provided JSON and understand what is being tested.
Benchmark Overview
The benchmark compares the performance of Array.prototype.map
( native JavaScript method) with _map
from the popular utility library Lodash. The goal is to determine which approach provides better performance for mapping an array of numbers by doubling each value.
Options Compared
Two options are compared:
Array.prototype.map()
method, which iterates over an array and applies a specified function to each element._map()
function, which provides a similar functionality to the native JavaScript map()
method but may optimize it for better performance.Pros and Cons
Native JavaScript (Array.prototype.map)
Pros:
Cons:
Lodash (.map())
Pros:
Cons:
Other Considerations
When deciding between these two approaches, consider the following factors:
Library Overview
Lodash is a popular utility library for JavaScript that provides various functions to simplify common tasks. The _map()
function is one of its most widely used features, which allows you to apply a specified function to each element of an array while preserving the original array structure.
JavaScript Features and Syntax
This benchmark doesn't use any special JavaScript features or syntax beyond what's required for basic JavaScript programming (e.g., arrow functions, template literals). If it did utilize advanced features like async/await, generators, or Promises, the explanation would focus on those aspects as well. In this case, that's not the case.
Alternative Benchmarks
If you're interested in exploring other alternatives to benchmark performance differences between Array.prototype.map
and Lodash _map()
, consider these options:
forEach()
method instead of map()