Benchmark: interpolation vs toString vs concat

Script Preparation code:

var didThing = true;

Tests:

interpolation
`${didThing}`
toString
didThing.toString()
concat
'' + didThing

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
interpolation
toString
concat

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Safari/605.1.15

Browser/OS: Safari 16 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
interpolation	19801916.0 Ops/sec
toString	13691111.0 Ops/sec
concat	16290339.0 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 benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares three different ways to concatenate a string in JavaScript:

1. Interpolation (`${didThing}`)
2. `toString()` method
3. Concatenation using the `+` operator (`'' + didThing`)

**Options Compared**

The benchmark is comparing these three options because they are often used in similar situations, but with different performance implications.

* **Interpolation (`${didThing}`)**: This approach uses template literals or string formatting functions to insert values into a string.
* `toString()` method: This approach calls the `toString()` method on an object (in this case, `didThing`) and returns its string representation.
* Concatenation using the `+` operator (`'' + didThing`): This approach uses the `+` operator to concatenate two strings.

**Pros and Cons of Each Approach**

1. **Interpolation**
	* Pros: Generally faster than calling `toString()` or concatenating with `+`, especially for simple strings.
	* Cons: May not be suitable for all situations, such as when working with legacy browsers that don't support template literals.
2. `toString()` method
	* Pros: Widely supported and can work across different environments.
	* Cons: Can be slower than interpolation or concatenation due to the overhead of calling a method.
3. Concatenation using the `+` operator
	* Pros: Simple and widely supported, but can lead to performance issues with large strings.
	* Cons: Generally slower than interpolation or calling `toString()`.

**Library Usage**

In this benchmark, there is no library being used explicitly. However, some modern browsers (like Safari 16) might use their own template literals implementations under the hood, which would affect the results.

**Special JS Features**

There are no special JavaScript features or syntaxes mentioned in the benchmark definition or individual test cases.

**Other Considerations**

When choosing between these options, consider the following factors:

* Performance: If speed is critical, interpolation might be a better choice.
* Compatibility: If you need to support older browsers or environments with limited string manipulation capabilities, `toString()` method or concatenation using `+` operator might be more suitable.
* Code readability and maintainability: Interpolation can make code easier to read and understand.

**Alternative Approaches**

If you're not satisfied with the results of this benchmark, consider testing other string concatenation approaches, such as:

* Using `Array.prototype.join()` or a similar method.
* Utilizing a library like Lodash's `join` function.
* Exploring more advanced template literals implementations, if available.

Keep in mind that the choice of approach ultimately depends on your specific use case and requirements.

Related benchmarks:

interpolation vs toString vs concat (version: 0)

Comparing performance of: interpolation vs toString vs concat

Created: one year ago by: Guest

Jump to the latest result

interpolation

toString

concat

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):