Benchmark: for loop vs. lodash range foreach22

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script>

Script Preparation code:

var arr = [];

for(var i = 0; i < 10000; i++) {
	arr.push({
    	id: i,
      	name: i
    });
}

Tests:

for
var x = 0; var l = arr.length; for (var i = 0; i < l; i++) { x++; }
array foreach
var x = 0; arr.forEach(function (i) { x++; });
array lodash foreach
var x = 0; _.forEach(arr, function (i) { x++; });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for
array foreach
array lodash foreach

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark and its components.

**Benchmark Definition:**

The benchmark is comparing three approaches:

1. **For Loop**: A traditional loop that increments a variable (`x`) by iterating over an array (`arr`) using a `for` loop.
2. **Array ForEach Loop**: An iterative method in JavaScript that calls a provided callback function for each element in the array, incrementing the variable (`x`) inside it.
3. **Lodash Array foreach Method**: A utility from the Lodash library (specifically, its `forEach` function) that is similar to the built-in `forEach` method in JavaScript but uses Lodash's own implementation.

**Pros and Cons of Each Approach:**

1. **For Loop**:
	* Pros: Generally faster, as it avoids the overhead of function calls and array iteration.
	* Cons: Can be slower if the loop condition is complex or if there are many iterations.
2. **Array ForEach Loop**:
	* Pros: Less verbose than traditional `for` loops and can be more readable for some developers.
	* Cons: Involves an additional function call, which might incur a performance penalty on older browsers.
3. **Lodash Array foreach Method**:
	* Pros: Provides a concise way to iterate over arrays without the need for a `for` loop or traditional `forEach`.
	* Cons: Uses Lodash's internal implementation, which might be slower than native JavaScript methods.

**Library Used:**

The benchmark uses Lodash, a popular utility library that provides additional functions and shortcuts for common tasks. The specific function used here is `_`, which is the alias for `lodash` itself. In this context, it represents the core functionality of the `forEach` method.

**Special JS Feature or Syntax:**

There are no special features or syntax specifically highlighted in the benchmarking code. However, the use of Lodash indicates that the developer is using a utility library to simplify common tasks.

**Alternative Approaches:**

Other possible approaches for this task could include:

1. Using `forEach` with an arrow function (`arr.forEach((i) => { x++; });`)
2. Implementing a custom iterator or generator
3. Using other libraries like Underscore.js, Ramda, or even native JavaScript methods like `Array.prototype.reduce()`

Related benchmarks:

for loop vs. lodash range foreach22 (version: 0)

Comparing performance of: for vs array foreach vs array lodash foreach

Created: 5 years ago by: Guest

Jump to the latest result

for

array foreach

array lodash foreach

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):