Benchmark: if vs && (condition)

Script Preparation code:

function someFunction () { return; }

Tests:

condition via `if` statement
if (1) { someFunction(); }
condition via `&&` statement
1 && someFunction();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
condition via `if` statement
condition via `&&` statement

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser/OS: Chrome 134 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
condition via `if` statement	275936128.0 Ops/sec
condition via `&&` statement	254891520.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the JavaScript microbenchmark you've shared.

**Benchmark Overview**

The provided benchmark measures the performance difference between using an if statement and an && (logical AND) operator for evaluating a condition in JavaScript. The test cases are designed to execute two simple functions: `someFunction()`.

**Script Preparation Code**

The script preparation code is:
```javascript
function someFunction() { return; }
```
This function simply returns without executing any significant code, making it an ideal candidate for measuring the overhead of if/&& statements.

**Html Preparation Code**

There is no HTML preparation code provided. This likely means that the benchmark only tests the JavaScript execution performance and doesn't consider rendering or other UI-related factors.

**Options Compared**

Two options are compared:

1. **If Statement (`if`)**: Evaluates a condition using an if statement.
2. **Logical AND Operator (`&&`)**: Evaluates a condition using a logical AND operator.

**Pros and Cons of Each Approach**

**If Statement (Condition via `if` statement)**

* Pros:
	+ More intuitive for human readers
	+ Can be more expressive in certain scenarios
* Cons:
	+ May introduce unnecessary overhead due to the function call and evaluation
	+ Requires a separate branch instruction, which can lead to additional CPU cycles

**Logical AND Operator (`&&`)**

* Pros:
	+ Often faster than if statements due to the shorter execution path
	+ Can be more efficient in terms of CPU instructions
* Cons:
	+ May be less intuitive for human readers
	+ Can make code harder to understand, especially for complex conditions

**Library Used**

There is no explicit library mentioned in the benchmark. However, it's likely that a default JavaScript engine or interpreter (e.g., V8) is used to execute the test cases.

**Special JS Features/Syntax**

None are mentioned explicitly. The test cases use basic JavaScript syntax and don't include any advanced features like closures, async/await, or ES6+ syntax.

**Other Alternatives**

Some alternative approaches for evaluating conditions in JavaScript could be:

* Using a ternary operator (`condition ? true : false`)
* Implementing a custom logical evaluation function
* Utilizing a third-party library or framework with built-in conditional evaluation optimizations

However, these alternatives are not tested in the provided benchmark.

Keep in mind that this explanation is intended to provide a general understanding of the JavaScript microbenchmark. If you have specific questions or would like further clarification, feel free to ask!

Related benchmarks:

if vs && (condition) (version: 0)

Comparing performance of: condition via `if` statement vs condition via `&&` statement

Created: 4 years ago by: Guest

Jump to the latest result

condition via `if` statement

condition via `&&` statement

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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