Benchmark: $.each vs for...in 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 < 100) {
  object[i]=i++;
}

Tests:

$.each
$.each(object, function (prop, value) { console.log(prop + " " + value); });
for...in
for (let prop in object) { if (object.hasOwnProperty(prop)) { console.log(prop + " " + object[prop]); } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
$.each
for...in

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the provided benchmark definition and test cases.

**Benchmark Definition:**

The benchmark is designed to compare the performance of two iteration methods: `$.each` (from jQuery) and `for...in`. The script preparation code creates an object with 100 properties, where each property is assigned a value. The HTML preparation code includes a reference to jQuery's JavaScript file.

**Options being compared:**

The benchmark compares two options:

1. **$.each**: This method uses the `$.each` function from jQuery to iterate over the object's properties. It takes an object and a callback function as arguments.
2. **for...in**: This is a built-in JavaScript iteration method that allows iterating over an object's properties using a loop.

**Pros and Cons:**

* **$.each**:
	+ Pros: Easy to use, concise syntax, works with jQuery objects.
	+ Cons: May be slower due to the overhead of jQuery, may not work as expected if the callback function is complex or modifies the object being iterated over.
* **for...in**:
	+ Pros: Fast, lightweight, and flexible. It allows iterating over properties without the overhead of a library like jQuery.
	+ Cons: Syntax can be verbose, requires more manual effort to handle property iteration.

**Library:**

The benchmark uses jQuery (a JavaScript library) for the `$.each` method. jQuery is a popular library that simplifies DOM manipulation and event handling in web applications. In this case, it's used primarily for its convenience and ease of use.

**Special JS feature or syntax:**

There are no special features or syntaxes mentioned in the benchmark definition.

**Test Cases:**

The test cases compare the performance of `$.each` and `for...in` on an object with 100 properties. The results will show which iteration method is faster.

**Other alternatives:**

If you want to explore alternative iteration methods, consider:

* **forEach**: This is a modern JavaScript method that allows iterating over arrays or objects using a callback function.
* **for...of**: This is another built-in JavaScript loop that allows iterating over iterable objects (like arrays) in a more concise way.

To create a similar benchmark, you can modify the script preparation code to include multiple iteration methods and compare their performance.

Related benchmarks:

$.each vs for...in for object (version: 0)

compare which cycle is better for iterate through object properties

Comparing performance of: $.each vs for...in

Created: 5 years ago by: Guest

Jump to the latest result

$.each

for...in

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):