Benchmark: find vs some vs every vs for (break) vs for (return)

Script Preparation code:

var array = [
  {id:1, name:'test'},
  {id:2, name:'test'},
  {id:3, name:'test'},
  {id:4, name:'test'},
  {id:5, name:'test'},
  {id:6, name:'test'},
  {id:7, name:'test'},
  {id:8, name:'test'},
  {id:9, name:'test'},
  {id:10, name:'test'},
];

Tests:

some
array.some(item => item.id === 10);
every
!array.every(item => item.id !== 10)
find
array.find(item => item.id === 10);
for (break)
let is = false; for (let i=0; i++; i<array.length) { if (array[i].id === 10) { is = true; break; } } return is;
for (return)
for (let i=0; i++; i<array.length) { if (array[i].id === 10) { return true; } } return false;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
some
every
find
for (break)
for (return)

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's dive into explaining the benchmark and its various test cases.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmarking test, specifically designed to compare the performance of different methods for searching an array in JavaScript. The benchmark is created using MeasureThat.net, which allows users to create, run, and share their own benchmarks.

**Script Preparation Code**

The script preparation code defines a sample array `array` with 10 elements, each containing an `id` property. This array will be used as the input for all test cases.

**Html Preparation Code**

There is no HTML preparation code provided in this example.

**Test Cases**

There are four main test cases:

1. **some**: Uses the `Array.prototype.some()` method to find the first element in the array that satisfies a condition.
2. **every**: Uses the `Array.prototype.every()` method to find an element in the array that satisfies a condition for all elements.
3. **find**: Uses the `Array.prototype.find()` method to find the first element in the array that satisfies a condition.
4. **for (break)** and **for (return)**: These test cases use traditional loops with break and return statements, respectively.

**Performance Comparison**

The benchmark measures the performance of each test case by executing them repeatedly and measuring the number of executions per second.

* **some**: This method is generally faster than `every` because it stops iterating as soon as it finds a match.
* **every**: In contrast to `some`, this method iterates over all elements before making a decision. It's likely slower due to the additional checks performed on each element.
* **find**: Similar to `some`, this method stops iterating once it finds a match, but its performance may vary depending on the initial position of the matching element in the array.
* **for (break)** and **for (return)**: These traditional loops are likely slower than the array-based methods due to the overhead of manual iteration control.

**Library Considerations**

None of the test cases explicitly use any external libraries. However, if we were to consider alternative implementations using third-party libraries, we might find that some libraries optimize these methods for performance:

* For `some`, a library like Lodash's `some` function or Ramda's `some` function might provide an optimized implementation.
* For `every`, a similar library optimization might be available.

**Special JS Features and Syntax**

None of the test cases explicitly use special JavaScript features or syntax. However, it's worth noting that some modern browsers may optimize these methods based on their usage patterns, especially if they're used in conjunction with specific browser-specific features like Web Workers or async/await.

**Alternatives to MeasureThat.net**

MeasureThat.net is a dedicated benchmarking platform for web applications and JavaScript microbenchmarks. However, other alternatives for testing performance include:

* jsPerf ( deprecated )
* Benchmark.js
* Perfume
* Chrome DevTools' built-in profiling tools

Keep in mind that while these alternatives can provide similar functionality to MeasureThat.net, they might not offer the exact same level of precision or control over test configurations.

Related benchmarks:

find vs some vs every vs for (break) vs for (return) (version: 0)

Comparing performance of: some vs every vs find vs for (break) vs for (return)

Created: 3 years ago by: Guest

Jump to the latest result

some

every

find

for (break)

for (return)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):