Benchmark: Direct call vs bind vs call vs apply vs static bound

Script Preparation code:

function test(msg) {
  var d = msg;
}

var testBound = test.bind(null);

Tests:

direct call
test("Hello");
bind
test.bind(null, "Hello")();
call
test.call(null, "Hello");
apply
test.apply(null, ["Hello"]);
static bind
testBound("Hello");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
direct call
bind
call
apply
static bind

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Browser/OS: Firefox 129 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
direct call	1648777600.0 Ops/sec
bind	139454880.0 Ops/sec
call	1648324992.0 Ops/sec
apply	308315616.0 Ops/sec
static bind	309263968.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks!

**Benchmark Definition**

The provided JSON defines a benchmark that tests different approaches to calling functions in JavaScript:

1. Direct call (`test("Hello");`)
2. Binding using `bind` method (`test.bind(null, "Hello")()`)
3. Binding using `call` method (`test.call(null, "Hello")`)
4. Applying the function using `apply` method (`test.apply(null, ["Hello"])`)
5. Static binding (using a bound function) (`testBound("Hello")`)

**Options Compared**

The benchmark compares the performance of these different approaches:

* Direct call: The original way of calling a function.
* Bind: A method that creates a new function with a specific `this` context.
* Call: A method that calls a function with a specified `this` context and arguments.
* Apply: A method that applies a function to an array of arguments, with the first argument as the `this` context.
* Static bind: A bound function created using `bind`, which is stored in memory.

**Pros and Cons**

Here's a brief summary:

* **Direct call**: Simple, but can lead to performance issues due to the overhead of creating a new function context.
* **Bind**: Can be useful when you need to set the `this` context for a function, but creates a new function object that may have additional overhead.
* **Call**: Similar to bind, but applies to an array of arguments. Can be slower than direct call due to the additional work.
* **Apply**: Faster than call because it only needs to create a new execution context with the specified `this` and arguments. However, it can lead to issues when working with function pointers or multiple argument passing.
* **Static bind**: The most efficient approach, as the bound function is stored in memory, avoiding the overhead of creating a new function object.

**Library: Function**

The benchmark uses JavaScript's built-in `Function` constructor and methods (`bind`, `call`, and `apply`) to test different approaches. No external libraries are required.

**Special JS Feature/Syntax**

This benchmark does not use any special features or syntax, such as async/await, generators, or closures. It only focuses on basic function calling mechanics.

**Other Alternatives**

Some alternative approaches to binding functions in JavaScript include:

* **Arrow functions**: Create a new function with the `this` context set automatically using an arrow function.
* **Prototypal inheritance**: Use inheritance patterns (e.g., prototypal subclassing) to set up the `this` context for a function.
* **Function factories**: Create functions that return other functions, allowing you to control the `this` context.

Keep in mind that these alternatives may have different performance characteristics or use cases compared to the binding methods used in this benchmark.

Related benchmarks:

Direct call vs bind vs call vs apply vs static bound (version: 0)

Comparing performance of: direct call vs bind vs call vs apply vs static bind

Created: 4 months ago by: Guest

Jump to the latest result

direct call

bind

call

apply

static bind

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):