Benchmark: string concat vs stringify array

Script Preparation code:

const test = ["one", "two"];

Tests:

String concat
const test = ["one", "two"]; let bloop = test[0] + '.' + test[1];
Json stringify
const test = ["one", "two"]; let bloop = JSON.stringify(test);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String concat
Json stringify

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:127.0) Gecko/20100101 Firefox/127.0

Browser/OS: Firefox 127 on Windows

View result in a separate tab

Test name	Executions per second
String concat	2180908800.0 Ops/sec
Json stringify	9060823.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, the options compared, pros and cons of each approach, and other considerations.

**Benchmark Description**

The benchmark is comparing two approaches to concatenate strings in JavaScript:

1. **String concatenation using `+` operator**
2. **JSON stringification using `JSON.stringify()`**

The goal is to determine which approach is faster and more efficient for concatenating strings.

**Options Compared**

The options being compared are:

* String concatenation using the `+` operator
* JSON stringification using `JSON.stringify()`

**Pros and Cons of Each Approach**

1. **String Concatenation using `+` Operator**
	* Pros:
		+ Easy to read and understand
		+ No dependencies on external libraries
	* Cons:
		+ Can lead to performance issues due to the creation of intermediate strings
		+ May not be suitable for very large strings or concatenations
2. **JSON Stringification using `JSON.stringify()`
	* Pros:
		+ Can handle large strings and concatenations efficiently
		+ Creates a single, compact string without intermediate characters
	* Cons:
		+ Requires the use of the JSON library, which may introduce dependencies
		+ May have a slightly higher overhead due to the creation of a JSON object

**Library Used:**

In this benchmark, the `JSON` library is used for the `JSON.stringify()` approach. The `JSON` library provides a standardized way of encoding JavaScript objects as JSON strings.

**Special JS Feature/Syntax: None**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Alternatives:**

In addition to the two approaches compared, there are other ways to concatenate strings in JavaScript:

* Using template literals ( introduced in ECMAScript 2015)
* Using a custom implementation of concatenation using a string buffer

Template literals, for example, provide a more readable and efficient way of concatenating strings:
```javascript
const test = [\"one\", \"two\"];
let bloop = `${test[0]}${'.'}${test[1]}`;
```
This approach is similar to string concatenation using the `+` operator but provides better performance and readability.

The benchmark also allows for custom implementations of concatenation, such as using a string buffer:
```javascript
const test = [\"one\", \"two\"];
let bloop = '';
for (const s of test) {
  bloop += s;
}
```
This approach can provide the best performance but may require more code and understanding of string manipulation.

Overall, the benchmark provides a useful comparison of two common approaches to concatenating strings in JavaScript, highlighting their pros and cons, and allowing users to explore alternative solutions.

Related benchmarks:

string concat vs stringify array (version: 0)

Comparing performance of: String concat vs Json stringify

Created: 6 months ago by: Guest

Jump to the latest result

String concat

Json stringify

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):