Benchmark: number to string test - 2

Script Preparation code:

var num = 1

Tests:

String
const a = String(num)
literal
const b = `${num}`
plus
const c = '' + num
toString
const d = num.toString()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String
literal
plus
toString

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Measuring the performance of different JavaScript approaches for converting a number to a string can be a complex task. Let's break down what's being tested in the provided JSON.

**Benchmark Definition**
The benchmark definition specifies that we're measuring the time it takes to convert an integer (`num`) to a string using different methods.

**Script Preparation Code**
The script preparation code sets up a variable `num` with an initial value of 1, which will be used as input for the conversions.

**Html Preparation Code**
There is no HTML preparation code specified, suggesting that this benchmark focuses solely on JavaScript performance.

**Individual Test Cases**
We have four test cases, each representing a different approach to convert `num` to a string:

1. **String**: Using the built-in `String()` function.
2. **Literal**: Using template literals (`${num}`).
3. **Plus**: Using the `+` operator for concatenation (`'' + num`).
4. **toString**: Calling the `toString()` method directly on `num`.

**Library**
There is no explicit library mentioned in the benchmark definition or test cases.

**JavaScript Features/Syntax**
The following JavaScript features are used:

* Template literals ( introduced in ECMAScript 2015, also known as ES6)
* The `+` operator for concatenation

Now, let's discuss the pros and cons of each approach:

1. **String()**: This is a built-in function that creates a new string object from the input value. It might be slower due to the overhead of creating an object.
2. **Literal**: Template literals are generally faster than using `+` for concatenation, as they avoid the need to create intermediate strings. However, older browsers may not support template literals.
3. **Plus**: This approach requires creating a new string by concatenating two values using the `+` operator. While it's simple and widely supported, it might be slower than the other approaches due to the overhead of creating an intermediate string.
4. **toString()**: Calling `toString()` on a number returns a string representation directly, which is likely to be the fastest approach, as it avoids the need for any additional operations.

**Other Alternatives**

If these four approaches aren't fast enough for your use case, you might consider using other methods:

* Using a library like `lodash` or `underscore`, which provide various string manipulation functions.
* Utilizing a different data type, such as a `BigInt`, if you need to work with arbitrarily large integers.
* Implementing a custom string conversion function in JavaScript.

Keep in mind that the choice of approach depends on your specific requirements and performance constraints.

Related benchmarks:

number to string test - 2 (version: 0)

Comparing performance of: String vs literal vs plus vs toString

Created: 4 years ago by: Guest

Jump to the latest result

String

literal

plus

toString

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):