Benchmark: Compare IDs string vs number

Tests:

Comparing Strings
var a = "id"+123 a === "id123"
Comparing numbers
var a = 123 a === 123

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Comparing Strings
Comparing numbers

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 YaBrowser/24.1.0.0 Safari/537.36

Browser/OS: Yandex Browser 24 on Linux

View result in a separate tab

Test name	Executions per second
Comparing Strings	78792904.0 Ops/sec
Comparing numbers	75514352.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**What is being tested?**

The benchmark is comparing two approaches: concatenating a string with an integer using either a string literal or a numeric literal, and then checking if the resulting value is equal to the original string or number. In other words, it's testing whether `a === "id" + 123` (string concatenation) vs `a === 123` (direct comparison).

**Options compared:**

There are two options being compared:

1. **String concatenation**: Using a string literal (`"id"` and `"123"`).
2. **Direct comparison**: Comparing the integer value directly to the original number.

**Pros and cons of each approach:**

* **String concatenation**:
	+ Pros: This is the traditional way of combining strings in JavaScript, and it's widely supported.
	+ Cons: It can lead to performance issues when dealing with large numbers or complex expressions, as JavaScript creates new strings and allocates memory for each concatenation.
* **Direct comparison**:
	+ Pros: Direct comparisons are often faster and more efficient, especially for numeric values. This approach also avoids the overhead of creating a new string.
	+ Cons: It's less intuitive and may lead to unexpected behavior if not used carefully.

**Special JS feature or syntax:**

In this benchmark, there is no special JavaScript feature or syntax being tested. However, it's worth noting that some older browsers might behave differently when dealing with string concatenation and direct comparisons.

**Library usage:**

There are no libraries used in this benchmark.

**Alternatives:**

Other alternatives for testing similar scenarios could include:

1. **Template literals**: Instead of using the `+` operator for string concatenation, you could use template literals (e.g., `a = `${"id"}${123}`; a === "id123"`).
2. **ES6's `String.prototype.repeat()` method**: This method allows you to repeat a string with a given count, which might be more efficient than concatenating strings in some cases.
3. **Benchmarking tools**: Instead of using MeasureThat.net, you could use other benchmarking tools like Benchmark.js or jsbench.me.

In summary, the provided benchmark is testing the performance difference between two approaches: string concatenation and direct comparison for comparing a string and an integer value. The results can help developers understand which approach to use in their codebase for optimal performance.

Related benchmarks:

Compare IDs string vs number (version: 0)

Comparing performance of: Comparing Strings vs Comparing numbers

Created: 5 years ago by: Guest

Jump to the latest result

Comparing Strings

Comparing numbers

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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