Benchmark: Number() vs ParseInt

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Number()
.toString()

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 benchmark and its various components.

**Benchmark Definition**

The provided JSON defines two test cases, each representing a different approach to performing arithmetic operations in JavaScript. The benchmarks are:

1. **Number()**: This test case creates an array `nums` and pushes the result of converting a string `"500"` to a number using the `Number()` function into it. The loop iterates 100 times, pushing the converted value into the array.
2. **ParseInt**: This test case is similar to the previous one, but instead of using `Number()`, it uses the `parseInt()` function to convert the string `"500"` to an integer.

**Options Compared**

The two benchmarks compare the performance of:

1. Using the `Number()` function to convert a string to a number.
2. Using the `parseInt()` function to convert a string to an integer.

**Pros and Cons**

1. **Number()**:
	* Pros: More robust, as it can handle decimal points or negative numbers, whereas `parseInt()` only handles integers.
	* Cons: May be slower due to its more complex implementation.
2. **ParseInt**:
	* Pros: Faster, as it is optimized for integer conversions and uses a specialized algorithm.
	* Cons: May not work correctly with non-integer strings or decimal points.

**Library Usage**

Neither benchmark explicitly uses any libraries, but the `parseInt()` function is part of the JavaScript built-in functions.

**Special JS Feature or Syntax**

There are no special features or syntaxes used in these benchmarks. However, it's worth noting that if the `Number()` and `parseInt()` functions were being compared with other methods, such as `Float64Array` or `BigInt`, those would be considered.

**Other Alternatives**

If you wanted to compare performance with different approaches, you could add additional test cases using:

* **Function calls**: Compare the performance of calling a function that converts a string to a number (e.g., `function convertToNumber(x) { return Number(x); }`).
* **Built-in functions**: Compare the performance of using built-in functions like `toNumber()` or `toString()`.
* **Native modules**: Compare the performance of using native modules like `decimal.js` or ` big-integer`.

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

Related benchmarks:

Number() vs ParseInt (version: 0)

Comparing performance of: Number() vs .toString()

Created: 3 years ago by: Guest

Jump to the latest result

Number()

.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):