Benchmark: Object access - MeasureThat.net

Script Preparation code:

var response = {
  data: {
    property: "value",
  },
};

Tests:

Direct
function direct(response) { return response.data.property; }
Guard no condition
function guard(response) { return response && response.data && response.data.property; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Direct
Guard no condition

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark and its test cases.

**Benchmark Overview**

The benchmark is measuring the performance difference between two approaches to access an object's property in JavaScript: direct access and guarded access.

**Script Preparation Code**

The script preparation code defines a JavaScript object `response` with a nested structure:
```javascript
var response = {
  data: {
    property: "value"
  }
};
```
This object will be used as the input for both test cases.

**Html Preparation Code**

There is no HTML preparation code, which means that the benchmark only focuses on JavaScript performance and does not consider any additional overhead from rendering or parsing HTML.

**Test Cases**

The benchmark has two individual test cases:

1. **Direct**: This test case uses direct access to the object's property:
```javascript
function direct(response) {
  return response.data.property;
}
```
In this approach, the function directly accesses the `property` value without checking any conditions. The goal is to measure how fast the JavaScript engine can execute this simple access.

2. **Guard no condition**: This test case uses guarded access with a default value:
```javascript
function guard(response) {
  return response && response.data && response.data.property;
}
```
In this approach, the function first checks if `response` is truthy and then checks each nested property (`data` and `property`) before returning its value. The goal is to measure how fast the JavaScript engine can execute this more complex access.

**Library Usage**

Neither test case uses any external libraries.

**Special JS Features/Syntax**

There are no special JS features or syntax used in these benchmark cases. They focus on basic object access and the performance difference between direct and guarded approaches.

**Results Interpretation**

The benchmark results show the number of executions per second for each test case across various browsers (Chrome 72) and devices (Desktop). The higher the value, the faster the JavaScript engine executes the corresponding test case.

In this case:

* **Direct**: 837722752.0 executions per second
* **Guard no condition**: 818464704.0 executions per second

The results suggest that direct access is generally faster than guarded access in this specific benchmark.

**Alternatives**

If you want to explore other benchmarks or modify the existing one, here are some alternatives:

1. **Modify Script Preparation Code**: Change the structure of the `response` object to make it more complex (e.g., nested arrays, objects with multiple properties).
2. **Add Additional Test Cases**: Create new test cases for different scenarios, such as:
	* Using a different data type (e.g., array, JSON string)
	* Accessing a property using dot notation instead of bracket notation
	* Checking the result against a specific value or condition
3. **Use Different JavaScript Engines**: Measure performance differences between browsers (Chrome, Firefox, Safari) and/or Node.js.
4. **Add More Devices/Platforms**: Expand the benchmark to include more devices (Mobile, Tablet, Windows) and operating systems.

Keep in mind that these alternatives may change the focus of the benchmark or require adjustments to the script preparation code.

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36

Browser/OS: Chrome 72 on Mac OS X 10.14.3

View result in a separate tab

Test name	Executions per second
Direct	837722752.0 Ops/sec
Guard no condition	818464704.0 Ops/sec

Related benchmarks:

Object access (version: 0)

Comparing performance of: Direct vs Guard no condition

Created: 5 years ago by: Guest

Jump to the latest result

Direct

Guard no condition

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):