Benchmark: string-manipulation-benchmark

Script Preparation code:

var luckyNumber = Math.round(Math.random() * 100);

Tests:

interpolation
`Your lucky number for today is: ${luckyNumber}`;
concatenation
'Your lucky number for today is: ' + luckyNumber;
join
['Your lucky number for today is', luckyNumber].join(': ')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
interpolation
concatenation
join

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Browser/OS: Chrome 99 on Windows 7

View result in a separate tab

Test name	Executions per second
interpolation	9648106.0 Ops/sec
concatenation	8738842.0 Ops/sec
join	4149094.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks.

**What is being tested?**

The provided JSON represents a benchmark that tests three different ways to concatenate strings in JavaScript:

1. **Interpolation**: Using template literals with embedded expressions (e.g., `${luckyNumber}`).
2. **Concatenation**: Using the `+` operator to concatenate two or more strings together (e.g., `'Your lucky number for today is: ' + luckyNumber`).
3. **Join**: Using the `join()` method on an array of strings, with a separator provided (e.g., `['Your lucky number for today is', luckyNumber].join(': ')`).

**Options being compared**

In this benchmark, three different approaches are being compared:

1. Interpolation
2. Concatenation
3. Join

Each approach has its own strengths and weaknesses.

**Pros and Cons of each approach:**

1. **Interpolation (Template Literals)**:
	* Pros:
		+ Readable and concise syntax.
		+ Supports embedding expressions, making it suitable for dynamic data.
		+ Faster execution compared to concatenation.
	* Cons:
		+ Limited support in older browsers or environments.
2. **Concatenation**:
	* Pros:
		+ Widely supported across all browsers and environments.
		+ Simple syntax.
	* Cons:
		+ Less readable and maintainable due to the repeated use of `+`.
		+ Can lead to performance issues with large strings or frequent concatenations.
3. **Join**:
	* Pros:
		+ Efficient for joining multiple strings, especially when using an array.
		+ Flexible syntax (e.g., using different separators).
	* Cons:
		+ May have a slight performance overhead due to the creation of an intermediate array.

**Library usage**

There is no explicit library mentioned in this benchmark. However, it's worth noting that some JavaScript engines or browsers might use internal optimizations or caching mechanisms that could affect the performance results.

**Special JS features or syntax**

The `join()` method and template literals are standard JavaScript features, but they might be subject to variations depending on the specific browser or engine implementation (e.g., some older browsers might not support template literals).

**Alternative approaches**

Other alternatives for string concatenation in JavaScript include:

1. **String.prototype.concat()**: This method is deprecated since ECMAScript 5 and should not be used in new code.
2. **Array.prototype.join()**: While the `join()` method is widely supported, it's primarily designed for joining arrays, not strings. To join a string array, you would need to create an intermediate array or use a different approach altogether.

In summary, this benchmark provides a useful comparison of three common approaches for concatenating strings in JavaScript: interpolation (template literals), concatenation, and join. Understanding the pros and cons of each approach can help developers make informed decisions about their code's performance and maintainability.

Related benchmarks:

string-manipulation-benchmark (version: 0)

Comparing interpolation, concatenation and join.

Comparing performance of: interpolation vs concatenation vs join

Created: 2 years ago by: Guest

Jump to the latest result

interpolation

concatenation

join

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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