Benchmark: bind-vs-arrow - MeasureThat.net

Script Preparation code:

class A {
  execute() {
    
  }
  
  callback1() {}
  
  callback2() {}
}

window.a = new A();

Tests:

bind
a.execute = function () { let bound1 = this.callback1.bind(this); let bound2 = this.callback2.bind(this); bound1(); bound2(); } a.execute();
arrow
a.execute = function () { let bound1 = () => this.callback1(); let bound2 = () => this.callback2(); bound1(); bound2(); } a.execute();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
bind
arrow

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 21 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36

Browser/OS: Chrome 147 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
bind	146808032.0 Ops/sec
arrow	156480288.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested, compared, and their pros/cons.

**Benchmark Definition**

The benchmark definition is a JSON object that describes two test cases: `bind` and `arrow`. Both tests measure the performance difference between using the `.bind()` method (also known as "binding") versus arrow functions to create a closure in JavaScript.

**Options Compared**

In this benchmark, we have two options:

1. **Binding (.bind())**: This approach uses the `.bind()` method to attach the `callback1` and `callback2` methods to the `this` context of the `execute` function.
2. **Arrow Functions**: This approach uses arrow functions (`() =>`) to create closures for `callback1` and `callback2`.

**Pros/Cons**

**Binding (.bind())**

Pros:

* Can be used with any function, not just arrow functions
* Allows for explicit control over the `this` context
* Can be useful when working with older browsers that don't support arrow functions

Cons:

* Can lead to memory leaks if not used carefully
* Can make code harder to read and understand

**Arrow Functions**

Pros:

* Simplify code and make it more readable
* Eliminate the need for `.bind()` or `call()`
* Are widely supported in modern browsers

Cons:

* Only work with functions, not other types of expressions (e.g., literals)
* Can be less efficient than binding due to function lookup

**Library/Functionality Used**

In this benchmark, we're using JavaScript's built-in language features.

**Special JS Features/Syntax**

There are no special JS features or syntax used in these test cases. However, it's worth noting that arrow functions were introduced in ECMAScript 2015 (ES6) and have since become a standard feature in modern browsers.

**Other Alternatives**

If you're looking for alternatives to binding or arrow functions, you might consider:

* Using the `call()` method to achieve the same result as binding
* Utilizing a library like Lodash's `bindAll` function to simplify binding
* Using a transpiler or bundler like Babel to support older browsers that don't natively support arrow functions

Keep in mind that these alternatives might introduce additional overhead, complexity, or dependencies.

I hope this explanation helps! Let me know if you have any further questions.

Related benchmarks:

bind-vs-arrow (version: 0)

Comparing performance of: bind vs arrow

Created: 9 years ago by: Guest

Jump to the latest result

bind

arrow

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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