Benchmark: Convert string to number

Tests:

+
let converted = +'100'
parseInt
let converted = parseInt('100')

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

164.5M/s

parseInt

148.0M/s

Fastest: + (1.1x faster)

View exact numbers

✓ +: 164,527,680 ops/sec
• parseInt: 148,035,168 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
+
parseInt

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36

Browser/OS: Chrome 148 on Windows

View result in a separate tab

180.1M/s

parseInt

178.3M/s

View exact numbers

Test name	Executions per second
✓ +	180,149,264 Ops/sec
parseInt	178,308,448 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases.

**Benchmark Definition**

The benchmark is to measure the performance of converting a string to a number. There are two approaches:

1. Using the unary plus operator (`+`)
2. Using the `parseInt()` function

**Options Compared**

Two options are being compared:

* **Unary Plus Operator (`+`)**: This method directly converts the string to an integer by adding it to zero.
* **parseInt() Function**: This method also converts the string to a number, but with more flexibility (e.g., allowing for decimal numbers and handling leading zeros).

**Pros and Cons**

1. **Unary Plus Operator (`+`)**:
	* Pros: Simple, fast, and widely supported across browsers.
	* Cons: Can lead to precision issues if the input string contains decimal points or scientific notation.
2. **parseInt() Function**:
	* Pros: More flexible, handles leading zeros, and can convert strings with decimal points or scientific notation.
	* Cons: May be slower due to the parsing process.

**Library and Purpose**

None of the test cases use any external libraries. However, it's worth noting that `parseInt()` is a built-in JavaScript function, so no additional library is required.

**Special JS Features or Syntax**

The test cases do not use any special JavaScript features or syntax beyond what's necessary for the benchmarks.

**Other Alternatives**

For converting strings to numbers, other approaches could include:

* Using the `Number()` function (a synonym for `parseInt()` in some browsers)
* Using a regular expression to extract and parse the numeric value from the string
* Using a library like Moment.js for handling date and time conversions

Keep in mind that these alternatives might introduce additional dependencies or complexity.

**Benchmark Preparation Code**

Since there is no preparation code provided, it's likely that the benchmark framework will handle initialization and setup automatically.

Overall, this benchmark compares two simple but common approaches to converting strings to numbers. Understanding the trade-offs between speed, precision, and flexibility can help developers choose the best approach for their specific use cases.

Convert string to number (version: 0)

Perform string number to number type

Comparing performance of: `+ vs parseInt`

Created: 3 years ago by: Guest

Go to the latest result

+

parseInt

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Convert string to number (version: 0)

Perform string number to number type

Comparing performance of: + vs parseInt

Created: 3 years ago by: Guest

Go to the latest result

+

parseInt

Historical Performance Data aggregated from 17 community runs

Desktop Results:

Chrome 17 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `+ vs parseInt`