Benchmark: condition test - MeasureThat.net

Tests:

early return
let input=""; if (input.length === 0) { return 0; }
for loop
let input=""; let result = 0; for (let i= 0; i<input.length; i++){ result = ((result << 5) - result) + length.charCodeAt(i); result = result & result; } return result;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
early return
for loop

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand what's being tested in this JavaScript microbenchmark.

**Benchmark Definition**
The provided JSON represents the benchmark definition, which is quite minimal. It specifies:

* A `Name` for the benchmark, "condition test"
* An empty `Description`
* Empty `Script Preparation Code` and `Html Preparation Code`

This suggests that the benchmark only focuses on measuring the performance of the JavaScript code itself, without considering any external factors like HTML rendering or CSS layout.

**Individual Test Cases**
The benchmark consists of two individual test cases:

1. **Early Return**

The script preparation code is empty, which means this test case simply executes the provided JavaScript code:
```javascript
let input = "\"\"";
if (input.length === 0) {
  return 0;
}
```
This code checks if the `input` string is empty and returns 0 if true. The purpose of this test case is to measure how quickly the browser can execute a simple if-statement.

2. **For Loop**

The script preparation code is also empty, but this time it defines a JavaScript function:
```javascript
let input = "\"\"";
let result = 0;
for (let i = 0; i < input.length; i++) {
  result = ((result << 5) - result) + length.charCodeAt(i);
  result = result & result;
}
return result;
```
This code calculates a specific value using a for loop, which is likely intended to test the browser's performance in handling loops and bitwise operations.

**Options Compared**
In this benchmark, two different approaches are being compared:

1. **Early Return**: This approach uses an if-statement to return early from the function.
2. **For Loop**: This approach uses a for loop to iterate over the input string and perform calculations.

The pros and cons of these approaches are:

* **Early Return**:
	+ Pros: Can be faster since it returns early, potentially reducing overhead.
	+ Cons: May not cover all possible use cases, as it relies on a specific condition being met.
* **For Loop**:
	+ Pros: Covers more use cases, as the loop iterates over the entire input string.
	+ Cons: May be slower due to the loop overhead and potential calculations.

**Other Considerations**
There are no special JavaScript features or syntax used in this benchmark. However, it's worth noting that some browsers may optimize certain operations (like bitwise AND) more efficiently than others.

**Library**
None of the test cases use any external libraries. The code snippets above are self-contained and don't rely on any external dependencies.

**Alternatives**
Other alternatives to measuring JavaScript performance could include:

* **Benchmarks using WebAssembly**: WebAssembly provides a platform-agnostic way to run small, self-contained programs.
* **ES6+ benchmarks**: Modern JavaScript engines often focus on optimizing ES6+ features like async/await and generators.
* **Browser-specific benchmarks**: Some browsers have their own benchmarking tools, such as Chrome's Benchmarking Tool or Firefox's Performance Benchmark.

Keep in mind that different benchmarking approaches can provide distinct insights into a browser's performance capabilities.

Related benchmarks:

condition test (version: 0)

Comparing performance of: early return vs for loop

Created: 4 years ago by: Guest

Jump to the latest result

early return

for loop

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):