Benchmark: field vs property2

Script Preparation code:

class MyClass {
    constructor() {
        this.field = 1;
    }

    set field_value(val) {
        this.field = val;
    }
    get field_value() {
        return this.field;
    }

}

var theInstance = new MyClass();

Tests:

lodash
theInstance.field_value = (theInstance.field_value) + 1;
native
theInstance.field = (theInstance.field) + 1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash
native

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
lodash	14396499.0 Ops/sec
native	14417892.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring the performance of JavaScript code is crucial for optimizing and comparing different approaches.

The provided JSON represents two benchmark test cases: `field vs property2` and individual tests using Lodash library and native syntax.

**Test Case 1: field vs property2**

This test case compares the performance of accessing a field (using dot notation) versus a property (using bracket notation). The script preparation code defines a class `MyClass` with a constructor that initializes a field `field` to 1. The benchmark definition is simple:

```javascript
theInstance.field_value = (theInstance.field_value) + 1;
```

This line of code increments the value of `field_value` property by 1.

**Options compared:**

* **Dot notation (`this.field`)**: This approach uses dot notation to access and modify the `field` property.
* **Bracket notation (`this['field_value']`)**: This approach uses bracket notation to access and modify the `field_value` property. Bracket notation allows for dynamic property names, whereas dot notation is limited to literal property names.

**Pros and Cons:**

* **Dot notation (`this.field`):**
	+ Pros:
		- More readable and intuitive
		- Less prone to typos and errors
	+ Cons:
		- May be slower due to string interpolation
		- May not work well with dynamic property names
* **Bracket notation (`this['field_value']`):**
	+ Pros:
		- Allows for dynamic property names
		- May be faster due to reduced overhead
	+ Cons:
		- Less readable and less intuitive
		- Prone to typos and errors

**Test Case 2: Lodash library**

The second test case uses the Lodash library to perform a similar operation:

```javascript
const _ = require('lodash');

theInstance.field_value = _.inc(theInstance.field_value);
```

In this case, Lodash provides an `inc` function that increments its argument by 1.

**Library:**

Lodash is a popular JavaScript utility library that provides various functions for tasks such as array manipulation, object transformation, and more. In this case, the `inc` function is used to increment its argument by 1.

**Pros and Cons:**

* **Using Lodash (`_.inc`):**
	+ Pros:
		- Provides a convenient and readable way to perform arithmetic operations
		- Reduces boilerplate code
	+ Cons:
		- Introduces an external dependency (Lodash)
		- May be slower due to the overhead of function call

**Native syntax**

The third test case uses native JavaScript syntax:

```javascript
theInstance.field_value = theInstance.field_value + 1;
```

This is a simple increment operation using native JavaScript.

**Pros and Cons:**

* **Native syntax (`theInstance.field_value += 1`):**
	+ Pros:
		- Fastest execution time due to minimal overhead
		- Most efficient way to perform arithmetic operations
	+ Cons:
		- Less readable and less intuitive for complex expressions

**Other alternatives:**

In addition to the above options, there are other ways to increment a value in JavaScript:

* Using `++` or `--` operators with assignment (`(theInstance.field_value++) = 1;`)
* Using a temporary variable (`const temp = theInstance.field_value; theInstance.field_value = temp + 1;`)
* Using bitwise operations (e.g., `theInstance.field_value |= 1;`)

However, these alternatives may not be as readable or efficient as the above options.

Overall, the choice of approach depends on the specific use case and performance requirements. In general, using dot notation for accessing properties and bracket notation for dynamic property names is a good balance between readability and performance.

Related benchmarks:

field vs property2 (version: 0)

field vs property

Comparing performance of: lodash vs native

Created: 2 years ago by: Guest

Jump to the latest result

lodash

native

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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