Benchmark: String() vs .toString() vs Baseline

Tests:

String()
let num = 500; let nums = []; for(let i = 0; i < 100; ++i) { nums.push(String(num)); }
.toString()
let num = 500; let nums = []; for(let i = 0; i < 100; ++i) { nums.push(num.toString()); }
Baseline
let num = 500; let nums = []; for(let i = 0; i < 100; ++i) { nums.push(num); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String()
.toString()
Baseline

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided JSON.

The test cases compare three different approaches to convert an integer value to a string:

1. `String()`: This is a built-in JavaScript function that converts an object (in this case, an integer) to its corresponding string representation.
2. `.toString()`: This is a method called on the number itself, which also converts it to its string representation. However, in JavaScript, numbers do not have a `toString` method by default; instead, we use the `toString()` method or `String()` function.
3. Baseline: This is a simple approach that pushes the integer value directly into the array without converting it to a string.

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

**Pros and Cons**

* `String()`: Pros - It's concise and easy to read. Cons - It might be slower than using the `toString()` method or pushing the value directly.
* `.toString()`: Pros - It can be faster than `String()` because it doesn't create a new string object. Cons - In this specific test case, it's not being used correctly (it should be `Number().toString()`).
* Baseline: Pros - It's simple and efficient. Cons - It might not be as readable or maintainable.

It's worth noting that the `.toString()` method in JavaScript is not a built-in method for numbers; instead, we use `Number().toString()` to convert a number to its string representation.

The test results show that:

* The Baseline approach performs the best (highest executions per second), which makes sense since it's the simplest and most efficient.
* The `.toString()` approach is slower than the Baseline, which might be due to the incorrect usage of `Number().toString()`.
* The `String()` approach is the slowest, likely due to its overhead compared to using the `toString()` method or pushing the value directly.

Other alternatives for converting an integer to a string in JavaScript include:

* Using the `padStart()` or `padEnd()` methods with a specific length and padding character.
* Using the `format()` function (available in some modern browsers).
* Using a library like Lodash, which provides various string conversion functions.

Related benchmarks:

String() vs .toString() vs Baseline (version: 0)

Comparing performance of: String() vs .toString() vs Baseline

Created: 3 years ago by: Guest

Jump to the latest result

String()

.toString()

Baseline

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):