<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.7.11/lodash.min.js'></script>
function getRandomInt(max) {
return Math.floor(Math.random() * Math.floor(max));
}
var arr = [];
for(var i = 0; i < 1000; i++){
arr.push({value:getRandomInt(100)});
}
for (let i = 0; i < arr.length; i++) _.floor(arr[i], -2);
for (let i = 0; i < arr.length; i++) Math.floor(arr[i] * 100) / 100;
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
_.max | |
Math.max |
Test name | Executions per second |
---|---|
_.max | 1679.7 Ops/sec |
Math.max | 5544.5 Ops/sec |
Let's break down the benchmark and explain what's being tested.
Benchmark Definition JSON
The provided JSON defines two benchmarks:
_.floor
(from Lodash) versus Math.floor
for rounding negative numbers to the nearest integer._.max
(from Lodash) versus Math.max
for finding the maximum value in an array.Script Preparation Code
The script preparation code generates an array of 1000 objects, each containing a random integer value between -100 and 100. This array will be used as input for the benchmark tests.
Html Preparation Code
The HTML preparation code includes a reference to the Lodash library (version 4.7.11), which provides the _.floor
and _.max
functions being tested in the benchmarks.
Benchmark Test Cases
There are two test cases:
for (let i = 0; i < arr.length; i++) _.floor(arr[i], -2);
_.max
function to find the maximum value in the array.for (let i = 0; i < arr.length; i++) Math.floor(arr[i] * 100) / 100;
Math.max
function to find the maximum value in the array.Pros and Cons
Here are some pros and cons of each approach:
Other Considerations
When choosing between these two approaches, consider the trade-off between performance and code readability. If performance is critical and the input data is simple (e.g., an array of integers), using Math.max
might be a better choice. However, if the input data is more complex or you need to perform additional operations on the maximum value, Lodash's _.max
might be a better option.
Library: Lodash
Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string manipulation, and functional programming. The _.floor
and _.max
functions are part of the Lodash library, which provides a concise and expressive way to perform common data processing tasks.
Special JS Feature/Syntax
There is no special JavaScript feature or syntax used in this benchmark. However, if you're interested in exploring more advanced topics, some other features worth mentioning include:
Promise
API for handling asynchronous operationsasync/await
syntax for simplifying promise-based codeAs for alternatives to Lodash or the built-in JavaScript Math.max
, some popular options include: