Benchmark: parseInt vs Number additiondfsdsdsdfsdfsdfdsfsd

Script Preparation code:

var intA = 42.034;
var strB = "42.034";

Tests:

parseInt
var res = parseInt(intA) + parseInt(strB);
Number
var res = Number(intA) + Number(strB);
parseint with two params
var res = parseInt(intA, 10) + parseInt(strB, 10);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
parseInt
Number
parseint with two params

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the JavaScript benchmark and analyze what's being tested.

**What is being tested?**

MeasureThat.net is testing three different approaches to add two numbers: `parseInt` (without specifying a radix), `Number`, and `parseInt` with an optional radix (usually 10).

The test cases are designed to compare the performance of these three approaches:

1. `parseInt(strB)` vs `Number(strB)`: These tests measure the performance of using string values directly with `parseInt` and `Number`.
2. `parseInt(intA) + parseInt(strB)` vs `Number(intA) + Number(strB)`: These tests compare the performance of parsing integer values first, followed by adding to a string value.

**Options compared:**

The options being compared are:

* Using `parseInt` (with and without radix)
* Using `Number`
* Adding a string value to an integer value after parsing

**Pros and Cons:**

1. **Using `parseInt`**: This approach can be more efficient when working with strings that contain only valid numeric characters. However, it may lead to errors if the string contains non-numeric characters or is too large for the radix. Additionally, some browsers (like Chrome) optimize `parseInt` internally, which can affect performance.
2. **Using `Number`**: This approach is more convenient and efficient when working with strings that contain only valid numeric characters. However, it may lead to errors if the string contains non-numeric characters or is too large for the radix.
3. **Parsing integer values first + adding to a string value**: This approach can be less efficient due to the overhead of parsing integers.

**Library and purpose:**

* `parseInt` (and its optimized version in some browsers) is a built-in JavaScript function used to convert a string representation of a number to a number.
* `Number` is also a built-in JavaScript function that converts a string representation of a number to a number, similar to `parseInt`.

**Special JS feature or syntax:**

None mentioned explicitly.

**Other considerations:**

When working with numeric data in JavaScript, it's essential to consider the following factors:

* **Radix**: The radix (base) used for parsing numbers can affect performance and accuracy. Using an optimal radix can help reduce errors.
* **Non-numeric characters**: When using `parseInt` or `Number`, non-numeric characters in the input string may lead to unexpected behavior or errors.
* **Large values**: Working with large numeric values can impact performance due to memory allocation, arithmetic operations, and other factors.

**Alternatives:**

Other alternatives for performing numerical calculations in JavaScript include:

* Using native Web APIs like `Float64Array` or `BigInt`
* Utilizing third-party libraries for mathematical operations
* Implementing custom parsing functions or using existing parsing libraries

Keep in mind that the choice of approach depends on your specific use case, performance requirements, and personal preference.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36

Browser/OS: Chrome 80 on Mac OS X 10.15.2

View result in a separate tab

Test name	Executions per second
parseInt	2123194.2 Ops/sec
Number	2129329.0 Ops/sec
parseint with two params	2122829.5 Ops/sec

Related benchmarks:

parseInt vs Number additiondfsdsdsdfsdfsdfdsfsd (version: 0)

Comparing performance of: parseInt vs Number vs parseint with two params

Created: 4 years ago by: Guest

Jump to the latest result

parseInt

Number

parseint with two params

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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