Benchmark: Number to String

Script Preparation code:

var number = Math.round(Math.random() * 1000)

Tests:

Interpolation
`${number}`
toString()
number.toString()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Interpolation
toString()

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/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Interpolation	127820224.0 Ops/sec
toString()	113167848.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark measures the performance of two approaches to convert an integer to a string in JavaScript: interpolation and the `toString()` method.

**Interpolation Approach**

In the interpolation approach, a variable `number` is assigned a random value between 0 and 1000 using `Math.round(Math.random() * 1000)`. This value is then inserted into a template string using backticks (`).

The interpolation approach uses the spread operator (`...`) to extract the value of `number` from the template string. The resulting string is compared to the original numeric value.

**toString() Method Approach**

In the `toString()` method approach, the built-in `toString()` method is used to convert the integer to a string.

The main difference between these two approaches is that interpolation allows for more flexible and dynamic string formatting, while the `toString()` method provides a more straightforward and predictable way of converting numbers to strings.

**Pros and Cons**

* **Interpolation Approach**
	+ Pros:
		- More flexible and dynamic string formatting
		- Can be used with variables, expressions, and even functions
	+ Cons:
		- May have performance overhead due to template parsing and evaluation
		- Can lead to security vulnerabilities if not properly sanitized
* **toString() Method Approach**
	+ Pros:
		- More straightforward and predictable conversion
		- Typically faster than interpolation approach
	+ Cons:
		- Less flexible and dynamic string formatting compared to interpolation

**Other Considerations**

* The use of `Math.round()` in the preparation code may introduce some variability in the benchmark results, as it can lead to slightly different values being generated for each execution.
* The benchmark assumes that the `toString()` method is implemented correctly by the JavaScript engine. In reality, there might be some variations in implementation across different browsers and engines.

**Library**

None of the provided test cases use a specific library or module. However, it's worth noting that many modern JavaScript frameworks and libraries (e.g., React, Angular) often rely on interpolation techniques for string formatting.

**Special JS Feature/Syntax**

The benchmark uses backticks (`) for template literals, which is a relatively recent addition to the JavaScript language (introduced in ECMAScript 2015). This feature allows for more expressive and flexible string formatting.

Related benchmarks:

Number to String (version: 0)

Comparing performance of: Interpolation vs toString()

Created: 5 years ago by: Guest

Jump to the latest result

Interpolation

toString()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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