Benchmark: for vs jQuery each 2

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Script Preparation code:


// Populate the base array
var arr = [];
for (var i = 0; i < 1000; i++) {
  arr[i] = i;
}

function fn(a) {
  return a * 2 * 5;
}

Tests:

for loop
var l = arr.length; for(var i=0;i<l;i++) { fn(arr[i]); }
jQuery each
$.each(arr, fn);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for loop
jQuery each

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:84.0) Gecko/20100101 Firefox/84.0

Browser/OS: Firefox 84 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
for loop	282080.2 Ops/sec
jQuery each	330699.8 Ops/sec

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark is designed to compare the performance of two approaches: using a traditional `for` loop and jQuery's `.each()` method to iterate over an array and perform an operation on each element.

**Script Preparation Code**

The script preparation code initializes an empty array `arr` with 1000 elements, populates it with integer values from 0 to 999, and defines a function `fn(a)` that takes an input `a`, multiplies it by 2, and then by 5, returning the result.

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the jQuery library version 1.x from Google's CDN.

**Benchmark Definition**

The benchmark definition is a JSON object that contains two test cases:

1. **For Loop**: This test case uses a traditional `for` loop to iterate over the `arr` array and call the `fn()` function on each element.
2. **jQuery Each**: This test case uses jQuery's `.each()` method to iterate over the `arr` array and call the `fn()` function on each element.

**Pros and Cons of Each Approach**

1. **Traditional For Loop**:
	* Pros: Generally faster and more efficient, as it allows for direct access to the array elements without the overhead of a library.
	* Cons: Can be verbose and less readable, especially for complex loops or large datasets.
2. **jQuery Each**:
	* Pros: More concise and readable, as it abstracts away the iteration logic and provides a more familiar syntax for many developers.
	* Cons: Can introduce additional overhead due to the library's functionality, which may impact performance.

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, jQuery's `.each()` method is used to iterate over the `arr` array and call the `fn()` function on each element. The `$` symbol is used to access jQuery functions and variables.

**Special JS Feature: No special features are mentioned in the benchmark definition or test cases.**

**Alternative Approaches**

Other alternatives for iterating over arrays in JavaScript include:

1. **Array.prototype.forEach()**: A more modern and concise way to iterate over arrays, introduced in ECMAScript 5.
2. **Arrow Functions**: Can be used to simplify loop logic and provide a more concise syntax.
3. **Generators**: An iterative approach that allows for more complex iteration logic and can be used with generators.

Note that these alternatives may not directly compare to the traditional `for` loop or jQuery's `.each()` method, but they offer different trade-offs in terms of conciseness, readability, and performance.

Related benchmarks:

for vs jQuery each 2 (version: 0)

Comparing performance of: for loop vs jQuery each

Created: 3 years ago by: Guest

Jump to the latest result

for loop

jQuery each

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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