Benchmark: queryselector vs getelemebnt

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<div id="nhngodo">Hi! NHNgodo!</div>

Tests:

getElementByid
var el = document.getElementById("nhngodo"); el.innerText = "Hi! NHNgodo!";
JQuery
$("#nhngodo").text("Hi! NHNgodo!");
querySelector
var el = document.querySelector("#nhngodo"); el.innerText = "Hi! NHNgodo!";

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getElementByid
JQuery
querySelector

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

Browser/OS: Chrome 96 on Windows

View result in a separate tab

Test name	Executions per second
getElementByid	367657.2 Ops/sec
JQuery	178385.2 Ops/sec
querySelector	292858.6 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Definition**

The benchmark is testing three different ways to select an HTML element by its ID: `getElementById`, `querySelector`, and `$` (which is a jQuery shortcut).

**Options Compared**

1. **`getElementById`**: This method uses the `document.getElementById` function, which returns a reference to the first element with the specified ID.
2. **`querySelector`**: This method uses the `document.querySelector` function, which returns the first element that matches the specified CSS selector. In this case, it's used to select an element by its ID.
3. **$ (jQuery)**: This is a shortcut for `$()` function in jQuery, which selects elements based on a CSS selector.

**Pros and Cons**

* `getElementById`:
	+ Pros: Simple, widely supported, and has been the standard way of selecting elements by ID in HTML.
	+ Cons: Can be slower than other methods, especially if the element is deeply nested within another element.
* `querySelector`:
	+ Pros: More flexible than `getElementById`, as it can also select elements based on CSS selectors. It's also faster and more efficient.
	+ Cons: May not work in older browsers that don't support CSS selectors, and may require additional parsing to determine the correct selector.
* `$ (jQuery)`:
	+ Pros: Fast and efficient, especially when used with jQuery plugins and libraries.
	+ Cons: Requires an external library, which can increase the size of your application's bundle. Also, may not be as widely supported in older browsers.

**Library and Purpose**

In this benchmark, jQuery is used to provide a `$` shortcut for the `querySelector` method. The `$()` function selects elements based on a CSS selector, making it easy to target elements with specific IDs or classes.

**Special JS Feature/Syntax**

None of these options use any special JavaScript features or syntax.

**Other Alternatives**

If you're interested in benchmarking other ways to select HTML elements, here are some alternatives:

* `document.querySelectorAll`: This method selects all elements that match the specified CSS selector.
* `getElementsByAttribute`: This method returns a live HTMLCollection of elements with the specified attribute value.
* `document.createElement`, `appendChild`, and `removeChild` methods: These can be used to dynamically create and manipulate DOM elements.

Keep in mind that these alternatives may have different performance characteristics, syntax, or use cases, so it's essential to consider their specific requirements when choosing a method for your application.

Related benchmarks:

queryselector vs getelemebnt (version: 0)

Comparing performance of: getElementByid vs JQuery vs querySelector

Created: 3 years ago by: Guest

Jump to the latest result

getElementByid

JQuery

querySelector

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):