Benchmark: $.each vs for...of with Object.getOwnPropertyNames() for object

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Script Preparation code:

var object = {};
var i = 0;
while (i < 1000) {
  object[i] = i++;
}

Tests:

$.each
$.each(object, function (prop, value) { console.log(prop + " " + value); });
for ... of with Object.getOwnPropertyNames
for (let prop of Object.getOwnPropertyNames(object)) { console.log(prop + " " + object[prop]); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
$.each
for ... of with Object.getOwnPropertyNames

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark compares two approaches for iterating through an object with 1000 properties: using jQuery's `$.each` method and a traditional `for...of` loop combined with `Object.getOwnPropertyNames()`. The test aims to determine which approach is faster.

**Options Compared**

1. **$.each**: Uses the `$.each()` function provided by jQuery, which iterates over an object's properties using a callback function.
2. **for...of with Object.getOwnPropertyNames**: A traditional loop that uses the `Object.getOwnPropertyNames()` method to get an array of the object's property names, and then iterates over this array using a `for...of` loop.

**Pros and Cons**

1. **$.each**:
	* Pros: Easy to write and understand, especially for those familiar with jQuery.
	* Cons: Requires jQuery to be included in the project, which may add unnecessary size to the bundle.
2. **for...of with Object.getOwnPropertyNames**:
	* Pros: No additional libraries are required, making it a more lightweight option.
	* Cons: Requires a basic understanding of JavaScript and its built-in methods.

**Library Usage**

In this benchmark, jQuery is used in the `$.each` test case. The `Object.getOwnPropertyNames()` method is a built-in JavaScript method that returns an array of all properties (including non-enumerable ones) of an object.

**Special JS Features/Syntax**

There are no special JavaScript features or syntaxes mentioned in this benchmark.

**Benchmark Preparation Code Analysis**

The script preparation code creates an object `object` with 1000 properties, where each property is assigned a value using the expression `object[i] = i++`. This creates an object that can be iterated over using either approach being tested.

**Alternative Approaches**

Other alternatives for iterating through objects in JavaScript include:

1. **for...in**: Iterates over an object's enumerable properties, which may not include non-enumerable properties.
2. **forEach()**: A more modern and concise way to iterate over arrays, but can be used with objects using the `Object.keys()` method or a library like Lodash.
3. **Array.prototype.forEach.call()**: Similar to `forEach()`, but uses an array-like object (in this case, an object) as its first argument.

These alternatives may offer different performance characteristics and trade-offs, depending on the specific use case and requirements.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.56

Browser/OS: Chrome 107 on Windows

View result in a separate tab

Test name	Executions per second
$.each	287.9 Ops/sec
for ... of with Object.getOwnPropertyNames	283.8 Ops/sec

Related benchmarks:

$.each vs for...of with Object.getOwnPropertyNames() for object (version: 0)

Compare iterating through object with 1000 properties

Comparing performance of: $.each vs for ... of with Object.getOwnPropertyNames

Created: 4 years ago by: Guest

Jump to the latest result

$.each

for ... of with Object.getOwnPropertyNames

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):