Benchmark: Arrow function vs bind function 222

Script Preparation code:

function f() {
  return this.a;
}

Tests:

Arrow function
const x = {a: 5}; const af = () => { return x.a } af()
Bind function
const x = {a:5}; const af = f.bind(x); af();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Arrow function
Bind function

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser/OS: Chrome 144 on Windows

View result in a separate tab

Test name	Executions per second
Arrow function	200457120.0 Ops/sec
Bind function	213312432.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks!

**Benchmark Overview**

The provided benchmark compares two approaches: arrow functions and bind functions in JavaScript.

**What is tested?**

In this benchmark, we are testing how fast an object's property value can be accessed using an arrow function versus a bound function. The test cases use a simple object `x` with a single property `a`.

**Options compared**

The two options being compared are:

1. **Arrow functions**: A concise way of defining small, single-purpose functions. In this case, the arrow function is used to access the value of `x.a`.
2. **Bind functions**: A way to bind the context of a function to an object, allowing it to be called like a property.

**Pros and Cons**

* **Arrow functions**:
	+ Pros: concise, easy to read, and efficient.
	+ Cons: can be less readable for complex logic, and might not work as expected with some browser versions.
* **Bind functions**:
	+ Pros: provides explicit control over the context, which can be useful in certain scenarios.
	+ Cons: more verbose, harder to read, and can lead to confusion if not used correctly.

**Library/Library Purpose**

None mentioned in this benchmark.

**Special JS feature/Syntax**

No special features or syntax are used in these test cases. They are using standard JavaScript features.

**Other alternatives**

Other approaches could be:

* Using a traditional function expression: `function f() { return x.a; }`
* Using a method call on the object: `x.a`
* Using a lambda function (if supported by the browser): `(x) => x.a`

However, these alternatives are not being tested in this benchmark.

**Benchmark Preparation Code**

The provided script preparation code defines an object `f` with a single property `a`, which is then used in both arrow functions and bind functions.

Related benchmarks:

Arrow function vs bind function 222 (version: 0)

Comparing performance of: Arrow function vs Bind function

Created: 2 years ago by: Guest

Jump to the latest result

Arrow function

Bind function

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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