Benchmark: jQuery - $(selector, context) VS $(context).find(selector)

HTML Preparation code:

<form class="test-form">
  <input class="test-element"/>
</form>

Script Preparation code:

var $context = $('.text-form');
var context = $context[0];

Tests:

$(selector, context)
$('.test-element', context);
$(selector, $context)
$('.test-element', $context);
$(selector).find(selector)
$('.test-form').find('.test-element');
$context.find(selector)
$context.find('.test-element');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
$(selector, context)
$(selector, $context)
$(selector).find(selector)
$context.find(selector)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36

Browser/OS: Chrome 60 on Fedora

View result in a separate tab

Test name	Executions per second
$(selector, context)	818506.4 Ops/sec
$(selector, $context)	2116584.2 Ops/sec
$(selector).find(selector)	289468.1 Ops/sec
$context.find(selector)	4760734.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The website MeasureThat.net allows users to create and run JavaScript microbenchmarks. The provided benchmark definition is for testing the performance of jQuery's `$` function, specifically comparing two different methods:

1. `$(selector, context)`
2. `$(context).find(selector)`

**Options Compared**

Two options are being compared:

1. **Direct Context Injection**: `$(selector, context)` - This method directly passes the context object to the selector.
2. **Context-Based Selection**: `$(context).find(selector)` - This method uses jQuery's `find()` method to search for elements within the specified context.

**Pros and Cons**

**Direct Context Injection (`$(selector, context)`):**

Pros:

* Simplifies the code by directly passing the context object
* May be faster since it avoids an additional lookup

Cons:

* Can lead to increased memory usage if unnecessary context objects are created
* Might not work as expected if the context object is modified or garbage collected during execution

**Context-Based Selection (`$(context).find(selector)`):**

Pros:

* Avoids creating unnecessary context objects, reducing memory usage
* Ensures that the correct context is used for selection

Cons:

* Requires an additional lookup and function call, potentially slowing down performance
* May lead to increased parsing and execution time due to the `find()` method

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, jQuery's `$` function is used to select elements in the HTML document.

**Special JS Feature/Syntax**

None of the provided test cases use special JavaScript features or syntax beyond what's standard in modern JavaScript.

**Other Alternatives**

If you're looking for alternatives to jQuery, consider:

1. **Vanilla JavaScript**: Using native JavaScript methods like `document.querySelectorAll()` or `document.querySelector()`.
2. **React**: A popular front-end library that uses JSX and a virtual DOM for efficient rendering.
3. **Vue.js**: Another prominent front-end framework that provides a robust set of tools for building user interfaces.

Keep in mind that each alternative has its strengths and weaknesses, and the choice ultimately depends on your specific use case, performance requirements, and personal preference.

Related benchmarks:

jQuery - $(selector, context) VS $(context).find(selector) (version: 1)

Comparing performance of: $(selector, context) vs $(selector, $context) vs $(selector).find(selector) vs $context.find(selector)

Created: 8 years ago by: Registered User

Jump to the latest result

$(selector, context)

$(selector, $context)

$(selector).find(selector)

$context.find(selector)

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):