Benchmark: Ts trivial getter vs method

Script Preparation code:

"use strict";
class Foo {
    constructor() {
        this._bar = 1;
    }
    get bar() {
        return this._bar;
    }
    getBar() {
        return this._bar;
    }
  setBar(val) { this._bar = val; }
}
window.instance = new Foo();

Tests:

Getter
var result = instance.bar; instance.setBar(result + 1);
Method
var result = instance.getBar(); instance.setBar(result + 1);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Getter
Method

Fastest: N/A

Slowest: N/A

Latest run results:

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

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I'd be happy to help explain the benchmark and its various components.

**Benchmark Definition**

The provided JSON defines a JavaScript microbenchmark, which measures the performance of two different approaches: accessing the `bar` property using getter methods (`getter`) versus method calls (`method`). Here's a breakdown of the options being compared:

* **Getter**: The first option uses a getter method to access the `bar` property. This means that instead of writing `instance.bar`, you would write `instance.get bar()`. The getter returns the value of `this._bar`.
* **Method**: The second option uses a method call (`setBar`) to access and modify the `bar` property.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Getter**:
	+ Pros: Generally more concise and readable, especially for simple getter methods.
	+ Cons: May incur overhead due to the extra indirection introduced by getters.
* **Method**:
	+ Pros: Can be more expressive and allow for easier modification or extension of the property's behavior.
	+ Cons: Requires more boilerplate code and may be less concise.

In terms of performance, both approaches are generally similar. However, some studies suggest that getter methods might incur a small overhead due to the indirection.

**Library Usage**

The benchmark uses no external libraries beyond the standard JavaScript library.

**Special JS Features or Syntax**

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

**Other Alternatives**

In addition to getters and methods, there are other ways to access and modify properties:

* **Dot notation**: `instance.bar` (not tested in this benchmark).
* **Bracket notation**: `instance['bar']` (not tested in this benchmark).

**Additional Considerations**

The performance difference between getters and methods might be negligible for simple cases. However, as the complexity of your code increases, the differences may become more pronounced. Additionally, some modern browsers have optimized getter methods, which can further reduce the overhead.

For a wider range of benchmarks, consider exploring other approaches to measuring performance, such as:

* **Using a virtual DOM library**: This can help simulate real-world scenarios and provide a more accurate picture of an application's performance.
* **Measuring memory allocation**: This can give insight into the impact of different coding styles on memory usage.
* **Analyzing CPU cycles or instruction counts**: These measurements can provide detailed information about the specific computational overhead of each approach.

Related benchmarks:

Ts trivial getter vs method (version: 0)

Comparing performance of: Getter vs Method

Created: 6 years ago by: Guest

Jump to the latest result

Getter

Method

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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