Benchmark: javascript foreach vs javascript each vs jquery javascript for

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Tests:

javascript foreach
var lista = []; for(var i = 0; i < 100000; i++){ lista.push(i); } lista.forEach(x => {var b = x+1})
jquery each
var lista = []; for(var i = 0; i < 100000; i++){ lista.push(i); } $(lista).each(function(x){ var b = x+1; });
javascript for
var lista = []; var x = 0; for(var i = 0; i < 100000; i++){ lista.push(i); } for (let i = 0; i < lista.length; i++) { var b = x+1; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
javascript foreach
jquery each
javascript for

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 134 on Android

View result in a separate tab

Test name	Executions per second
javascript foreach	573.7 Ops/sec
jquery each	189.3 Ops/sec
javascript for	553.4 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided JSON for MeasureThat.net, explaining what's being tested and analyzing the different approaches.

**Benchmark Overview**

The benchmark measures the performance of three JavaScript iteration methods: `forEach`, `each` (with jQuery), and a traditional `for` loop. The test case involves creating an array of 100,000 elements and iterating over it to perform a simple calculation (`x + 1`) on each element.

**Options Compared**

The benchmark compares the performance of three different iteration methods:

1. **JavaScript `forEach`**: This method takes a callback function as an argument, which is executed for each element in the array.
2. **jQuery `each`**: This method is similar to JavaScript's `forEach`, but it requires jQuery to be included and uses its proprietary `each` function.
3. **Traditional `for` loop**: This method uses a traditional loop with an index variable (`i`) to iterate over the array.

**Pros and Cons of Each Approach**

1. **JavaScript `forEach`**:
	* Pros: Concise, readable, and easy to implement. It's also part of the ECMAScript standard.
	* Cons: May incur some overhead due to function call and scope setup.
2. **jQuery `each`**:
	* Pros: Convenient for developers already familiar with jQuery, as it leverages the library's built-in functionality.
	* Cons: Requires jQuery to be included, which can add unnecessary dependencies and payload size. It also has a slightly less efficient implementation due to the proprietary nature of the function.
3. **Traditional `for` loop**:
	* Pros: Typically faster and more efficient than `forEach` or `each`, as it avoids the overhead of function call and scope setup.
	* Cons: Less readable and concise compared to `forEach`.

**Library and Syntax**

The test case uses jQuery's `each` method, which is a proprietary implementation. While not strictly necessary for this benchmark, using jQuery can introduce additional dependencies and payload size.

No special JavaScript features or syntax are used in these tests; they focus on comparing the performance of three common iteration methods.

**Alternatives**

Other alternatives to consider when iterating over arrays in JavaScript include:

* `for...in` loop
* `map()` and `reduce()` methods (although these might incur additional overhead due to function call and scope setup)
* WebAssembly (WASM) loops, which can provide a more efficient alternative for performance-critical code

Keep in mind that the choice of iteration method ultimately depends on the specific requirements of your project, such as readability, maintainability, and performance considerations.

Related benchmarks:

javascript foreach vs javascript each vs jquery javascript for (version: 0)

Comparing performance of: javascript foreach vs jquery each vs javascript for

Created: 3 years ago by: Guest

Jump to the latest result

javascript foreach

jquery each

javascript for

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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