Benchmark: Native JS: concatenate string with + vs template literals vs String.concat with Function.

Script Preparation code:

var name = "name";
var id = "id";
var platform = "haha";
function getPlatform(){
	return platform;
}

Tests:

using plus operator
for (let i = 0; i < 80; ++i) { let result = id + ": 1, " + name + ": someItem : " + getPlatform(); }
using concat function
for (let i = 0; i < 80; ++i) { let result = "".concat(id, ": 1, ", name, ": someItem : " + getPlatform()); }
using template literals
for (let i = 0; i < 80; ++i) { let result = `${id}: 1, ${name}: someItem : ${getPlatform()}`; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
using plus operator
using concat function
using template literals

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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.

**Overview**
The benchmark compares three ways to concatenate strings in JavaScript:

1. Using the `+` operator (also known as string concatenation)
2. Using template literals
3. Using the `concat()` function with a `Function` object

**Test Case: Native JS - concatenate string with + vs template literals vs String.concat with Function**

The test case is designed to measure which approach performs best for concatenating four strings.

**Script Preparation Code**
The script preparation code defines three variables:

* `name`: set to "name"
* `id`: set to "id"
* `platform`: set to "haha" (note: this variable is only used within the test case and not in the actual benchmark)

A function `getPlatform()` returns the value of `platform`.

**Html Preparation Code**
There is no HTML preparation code provided.

**Test Cases**
The benchmark has three individual test cases:

1. **using plus operator**: This test case uses the `+` operator to concatenate the strings.
2. **using concat function**: This test case uses the `concat()` function with a `Function` object to concatenate the strings.
3. **using template literals**: This test case uses template literals (introduced in ECMAScript 2015) to concatenate the strings.

**Library and Special JS Features**
The only library used in this benchmark is:

* `String`: The built-in JavaScript string type, which provides various methods for manipulating strings, including concatenation.

There are no special JavaScript features or syntax mentioned in this benchmark.

**Pros and Cons of Each Approach**

1. **using + operator**:
	* Pros: Simple and widely supported.
	* Cons: Can be slow due to the overhead of creating intermediate strings.
2. **using concat function**:
	* Pros: Allows for more control over the concatenation process, as you can pass arguments to the `concat()` method.
	* Cons: Requires a `Function` object to be created and passed to `concat()`, which can lead to performance overhead.
3. **using template literals**:
	* Pros: Modern and efficient way to concatenate strings, with better performance than traditional string concatenation.
	* Cons: Requires ECMAScript 2015 or later support.

**Other Alternatives**
In addition to these three approaches, other methods for concatenating strings in JavaScript include:

1. `String.prototype +=`
2. Using a library like Lodash
3. Using a utility function like `strings.concat`

However, these alternatives may have different performance characteristics and are not explicitly tested in this benchmark.

**Benchmark Results**
The latest benchmark results show the execution times for each test case on Chrome 103 running on a Desktop with Mac OS X 10.15.7. The results indicate that using template literals is the fastest approach.

Related benchmarks:

Native JS: concatenate string with + vs template literals vs String.concat with Function. (version: 0)

find best solution for concatenate 4 strings

Comparing performance of: using plus operator vs using concat function vs using template literals

Created: 3 years ago by: Guest

Jump to the latest result

using plus operator

using concat function

using template literals

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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