Benchmark: JSON.stringify, string concat, template string, join, plus

Script Preparation code:

var stringArray = Array.from({
    length: 1000
}).map(() => Math.random().toString())

Tests:

stringify
let str = JSON.stringify(stringArray);
join
let str = stringArray.join();
concat
let str = ""; for (let i = 0; i < stringArray.length; i++) str = str.concat(stringArray[i]);
string add
let str = ""; for (let i = 0; i < stringArray.length; i++) str = str+stringArray[i];
string template
let str = ""; for (let i = 0; i < stringArray.length; i++) str = `${str},${stringArray[i]}`;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
stringify
join
concat
string add
string template

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser/OS: Firefox 91 on Ubuntu

View result in a separate tab

Test name	Executions per second
stringify	14730.4 Ops/sec
join	26612.6 Ops/sec
concat	47642.5 Ops/sec
string add	141025.4 Ops/sec
string template	53450.9 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.

**Overview**

The provided JSON represents a benchmark test case on MeasureThat.net, where users can create and run JavaScript microbenchmarks. The benchmark tests four different ways to concatenate strings in JavaScript: `JSON.stringify`, string concatenation using the `+` operator, string templating using template literals (e.g., `${}`), and string concatenation using the `join()` method.

**Options being compared**

The four options being compared are:

1. **JSON.stringify**: This method is used to convert a JavaScript value into a JSON string.
2. **String concatenation using the `+` operator**: This involves using the `+` operator to concatenate two strings together.
3. **String templating using template literals (e.g., `${}`)**: This uses template literals to create a new string by inserting expressions inside double curly braces (`{}`).
4. **String concatenation using the `join()` method**: This is an array method that concatenates all elements of an array into a single string.

**Pros and Cons**

Here are some pros and cons for each option:

1. **JSON.stringify**
	* Pros: Can be faster than other methods, especially for large strings.
	* Cons: Can be slower for small strings due to the overhead of converting the string to JSON.
2. **String concatenation using the `+` operator**
	* Pros: Simple and easy to use.
	* Cons: Can be slow for large strings because it creates a new temporary string object on each concatenation.
3. **String templating using template literals (e.g., `${}`)**
	* Pros: Fast and efficient, especially for small strings.
	* Cons: May require additional library dependencies or polyfills for older browsers.
4. **String concatenation using the `join()` method**
	* Pros: Can be fast and efficient for large arrays of strings.
	* Cons: Requires an array of strings as input.

**Library usage**

The benchmark test case uses the `stringArray` variable, which is populated with an array of random strings using the `Array.from()` method and `Math.random().toString()`. This suggests that the test is not depending on any external libraries beyond what's built into JavaScript.

**Special JS feature or syntax**

There is no special JavaScript feature or syntax being used in this benchmark. However, it does use template literals (e.g., `${}`) for string templating, which was introduced in ECMAScript 2015 (ES6).

**Other alternatives**

If you're looking for alternative ways to concatenate strings in JavaScript, here are a few:

1. **String.fromCharCode()**: This method creates a new string by concatenating individual characters using their Unicode code points.
2. **Array.prototype.push() and String.prototype.concat()**: These methods can be used to concatenate strings in a loop.

Keep in mind that the performance of these alternatives may vary depending on your specific use case and JavaScript environment.

In summary, this benchmark test case provides a useful comparison between four different ways to concatenate strings in JavaScript. By understanding the pros and cons of each option, you can make informed decisions about which method is best suited for your specific needs.

Related benchmarks:

JSON.stringify, string concat, template string, join, plus (version: 0)

Comparing performance of: stringify vs join vs concat vs string add vs string template

Created: 3 years ago by: Guest

Jump to the latest result

stringify

join

concat

string add

string template

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):