Benchmark: find vs for loop

Script Preparation code:

var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];

Tests:

Using for loop
var found; for (var i = 0; i < array.length; i++) { if (i > 10) { found = i; break; } }
Using find
var found; array.find((i) => { if (i > 10) { found = i; return true; } });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Using for loop
Using find

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0

Browser/OS: Firefox 120 on Linux

View result in a separate tab

Test name	Executions per second
Using for loop	145621088.0 Ops/sec
Using find	66239196.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand what's being tested in the provided benchmark.

**Benchmark Overview**

The test compares the performance of two approaches: using a traditional for loop and using the `find()` method to achieve the same result.

**Script Preparation Code**

The script preparation code is:
```javascript
var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
```
This defines an array of 11 elements and assigns it to a variable named `array`.

**Html Preparation Code**

The html preparation code is empty, indicating that no HTML-related setup is required for this benchmark.

**Test Cases**

There are two test cases:

1. **Using for loop**
```javascript
var found;
for (var i = 0; i < array.length; i++) {
  if (i > 10) {
    found = i;
    break;
  }
}
```
This code uses a traditional for loop to iterate through the `array` and sets a variable named `found` to the value of `i` when `i` exceeds 10.

2. **Using find**
```javascript
var found;
array.find((i) => {
  if (i > 10) {
    found = i;
    return true;
  }
});
```
This code uses the `find()` method to search for a value in the `array`. The callback function takes an argument (`i`) and returns `true` when `i` exceeds 10. If such a value is found, it sets the variable `found` to that value.

**Library Usage**

Neither of these test cases uses any external libraries.

**Special JS Features/Syntax**

There are no special JavaScript features or syntax used in this benchmark.

**Options Compared**

The two options compared are:

1. **Traditional for loop**: a classic approach using an explicit loop to iterate through the array.
2. **Array.find() method**: a more modern and concise way of searching for a value in an array.

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each approach:

1. **Traditional for loop**:
	* Pros: explicit control over iteration, no dependency on modern JavaScript features.
	* Cons: can be error-prone, less concise than other approaches.
2. **Array.find() method**:
	* Pros: concise, easy to read, and maintainable, especially when dealing with larger datasets.
	* Cons: may not perform as well for very large arrays due to the overhead of the `find()` method.

**Other Alternatives**

If you need a more efficient approach or want to explore alternative solutions, here are some other options:

1. **Array.prototype.forEach()**: while it doesn't find a specific value like `find()`, it can be used with an iterator function to achieve similar results.
2. **Array.prototype.some()**: another method that finds the first element that meets a condition, but it's not as concise or readable as `find()`.

The choice of approach ultimately depends on your specific use case and performance requirements.

Related benchmarks:

find vs for loop (version: 0)

Compare find vs for loop

Comparing performance of: Using for loop vs Using find

Created: 3 years ago by: Registered User

Jump to the latest result

Using for loop

Using find

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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