Benchmark: matchMedia vs clientWidth vs innerWidth

HTML Preparation code:

Test

Tests:

clientWidth
document.documentElement.clientWidth > 640;
matchMedia
window.matchMedia("(min-width: 640px)").matches;
innerWidth
window.innerWidth > 640

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
clientWidth
matchMedia
innerWidth

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data to understand what is being tested on MeasureThat.net.

**Benchmark Definition**

The benchmark definition specifies that three different approaches are being compared:

1. `clientWidth`: Tests whether the `clientWidth` property of the `document.documentElement` returns a value greater than 640.
2. `matchMedia`: Tests whether the `matches()` method of the `window.matchMedia()` object returns true for a media query with a minimum width of 640px.
3. `innerWidth`: Tests whether the `innerWidth` property of the `window` object returns a value greater than 640.

**Options Compared**

The three approaches are being compared to determine which one is the fastest and most efficient. The benchmark is designed to measure the performance difference between these three approaches in terms of execution speed.

**Pros and Cons of Each Approach**

1. **clientWidth**: This approach checks the width of the document element, which can be affected by various factors such as font sizes, margins, and padding. It may not always return a precise value for the screen width.
2. **matchMedia**: This approach uses a media query to check if the screen width is greater than 640px. It provides a more accurate representation of the screen size but requires more processing power compared to `clientWidth`.
3. **innerWidth**: This approach simply checks the inner width of the window, which may not account for other factors that affect the screen width.

**Library and Purpose**

The `window.matchMedia()` function is part of the W3C Web APIs specification and provides a way to check the media query matches for various conditions, including screen size. In this benchmark, it's used to test the performance of matching media queries.

**Special JS Feature or Syntax (None)**

There are no special JavaScript features or syntax used in this benchmark.

**Alternative Approaches**

Other approaches to compare screen width could include:

1. `getComputedStyle()`: This method returns a CSSStyleDeclaration object that contains various properties, including `width`, which can be used to check the screen width.
2. `navigator.userAgent` and `screen.width`: These properties provide more information about the user's device but may not always return accurate values.

In conclusion, this benchmark compares three approaches to determine the fastest and most efficient way to test whether the screen width is greater than 640px: `clientWidth`, `matchMedia`, and `innerWidth`.

Latest run results:

Run details: (Test run date: an hour ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
clientWidth	2607636.0 Ops/sec
matchMedia	916744.1 Ops/sec
innerWidth	3885410.5 Ops/sec

Related benchmarks:

matchMedia vs clientWidth vs innerWidth (version: 0)

Comparing performance of: clientWidth vs matchMedia vs innerWidth

Created: 5 years ago by: Guest

Jump to the latest result

clientWidth

matchMedia

innerWidth

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 29 days ago):