Benchmark: for loop vs array find

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var a = 1
var b = [0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,0,2,3,4,5,6,7,8,9,1]

Tests:

For loop
var c for(i=0; i < b.length; i++){ if(b[i] === a) { c = b[i]; break; } }
Array loop
var c function test(value) { return value === a } c = b.find(test) console.log('c: ', c)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
For loop
Array loop

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model gemma2:9b, generated one year ago):

LLMs can make mistakes. Check important info.

This benchmark on MeasureThat.net compares two ways to find the value `a` (which is 1) within an array `b`.  Let's break down each approach:

**Test Case 1: "For loop"**

* **Code:** This test uses a traditional `for` loop to iterate through each element in the array `b`. Inside the loop, it compares each element (`b[i]`) with `a`. If a match is found, it stores the value in the variable `c` and exits the loop using `break`.

* **Pros:**
    * Simple and often intuitive for beginners.
    * Can be efficient if the target value is found early in the array.

* **Cons:**
    * Inefficient if the target value is not found quickly, as it iterates through the entire array.
    * Can be more verbose than other methods.

**Test Case 2: "Array loop"**

* **Code:** This test utilizes JavaScript's built-in `find` method on arrays. The `find` method iterates over each element in the array and executes a provided function for each element. If the function returns `true`, it means a match was found, and the `find` method returns that element.

* **Pros:**
    * More concise code.
    * Efficient as it stops iterating once a match is found.

* **Cons:**
    * Requires familiarity with JavaScript's array methods.

**Other Considerations:**

* **Lodash:** This benchmark includes `lodash.js`, which is a popular JavaScript library for utility functions and data manipulation. The inclusion of Lodash suggests that this benchmark might be exploring alternatives to native JavaScript features, or it could be benchmarking the performance differences between using Lodash's `find` implementation versus the built-in one.

* **Alternatives:**
    * **Manual Search:** You could write a custom function to search for a value in an array without using loops or built-in methods. However, this would likely be less efficient and more complex than using `find`.
    * **Binary Search:** If the array is sorted, you can use binary search, which has a time complexity of O(log n), making it significantly faster for large arrays.

**Overall:** In this case, the "Array loop" approach (using `find`) is generally more efficient and concise compared to the traditional "For loop" method.

Let me know if you have any other questions!

Related benchmarks:

for loop vs array find (version: 1)

Comparing performance of: For loop vs Array loop

Created: 7 years ago by: Registered User

Jump to the latest result

For loop

Array loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model gemma2:9b, generated one year ago):