<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>
var strings = [
'one', 'two', 'three'
]
var regex = /^(one|two|three)$/;
var input = 'three'
// Native
!!strings.find(function (o) { return o == input; })
!!_.find(strings, function (o) { return o==input; })
regex.test(input)
regex.test(input)
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
array find | |
_.find | |
regex | |
regex (i) |
Test name | Executions per second |
---|---|
array find | 2878186.5 Ops/sec |
_.find | 1553211.2 Ops/sec |
regex | 3349807.2 Ops/sec |
regex (i) | 3453665.8 Ops/sec |
Let's break down the provided benchmark and explain what is being tested, compared, and their pros and cons.
Benchmark Overview
The benchmark compares three approaches to search for an element in an array:
regex.test(input)
): This approach uses regular expressions to match the input string against the elements in the array.Options Compared
The benchmark compares the performance of each approach:
regex.test(input)
)Each approach is executed multiple times (not shown in the provided code), and their execution rates are measured.
Pros and Cons of Each Approach
regex.test(input)
):Library Used
The benchmark uses the Lodash library for its _.find() method. Lodash is a popular utility library that provides various functional programming helpers, including array manipulation functions like _.find(). The library adds value by providing a standardized way of writing code, making it easier to read and maintain.
Special JavaScript Feature/Syntax Used
None mentioned in the provided benchmark code.
Other Alternatives
If you want to test other approaches for searching an element in an array, consider using:
Array.prototype.indexOf()
or Array.prototype.findIndex()
: These methods search for an element in the array, but they return the index of the found element instead of a boolean value.The benchmark's results will help users understand which approach is fastest for their specific use case.