Benchmark: String comparison vs boolean check

Script Preparation code:

var status = 'public'; var status1 = false;

Tests:

String comparison
if(status === 'public') { console.log('hello'); }
Boolean check
if(status1) { console.log('hello'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String comparison
Boolean check

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Browser/OS: Chrome 144 on Windows

View result in a separate tab

Test name	Executions per second
String comparison	319226.4 Ops/sec
Boolean check	154871408.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into explaining the provided JavaScript microbenchmark.

**What is being tested?**

The benchmark measures the performance difference between two approaches:

1. **String comparison (`"status === 'public'")**: This test compares the speed of using a string literal (`'public'`) with the speed of comparing a string value (`status`).
2. **Boolean check (`"if(status1)"`)**: This test checks the performance of using a boolean variable (`status1`) as a condition.

**Options being compared**

The two options being compared are:

* Using a string literal for comparison (`"status === 'public'"`)
* Using a boolean variable for comparison (`"if(status1)"`)

**Pros and Cons:**

1. **String comparison (using `===`):**
	* Pros:
		+ More readable and maintainable code
		+ Easier to understand the intent of the code
	* Cons:
		+ May be slower due to the overhead of string interpolation
2. **Boolean check (using a boolean variable):**
	* Pros:
		+ Can be faster since it avoids the overhead of string comparison
	* Cons:
		+ Less readable and maintainable code
		+ Requires the use of a separate boolean variable, which may add complexity

**Library usage**

In this benchmark, there is no explicit library mentioned. However, some libraries might use similar techniques for performance optimization, such as using `===` for string comparisons or caching boolean values.

**Special JavaScript feature/syntax**

This benchmark does not explicitly use any special JavaScript features or syntax beyond the basic comparison operators (`===`, `==`, etc.). It is written in a straightforward and simple manner to allow easy understanding and execution.

**Other alternatives**

Some alternative approaches to these comparisons might include:

* Using `in` operator for string comparisons, which can be faster than `===` in some cases.
* Using `toString()` method to convert the variable to a string before comparison, which can help avoid issues with non-string types.
* Using caching mechanisms, such as memoization or function inlining, to optimize performance-critical code paths.

Overall, this benchmark provides a simple and straightforward way to compare the performance of two common use cases in JavaScript: string comparisons using `===` vs. boolean checks using a separate variable.

Related benchmarks:

String comparison vs boolean check (version: 0)

Comparing performance of: String comparison vs Boolean check

Created: 2 years ago by: Registered User

Jump to the latest result

String comparison

Boolean check

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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