Benchmark: URLSearchParams.has vs URLSearchParams.get without undefined returning

Script Preparation code:

var param = "?id=4&benchmark=5832";
var url = "https://www.measurethat.net" + param;
var loop = 10000;
var params = new URLSearchParams(param);

Tests:

URL
params.has('test') ? params.get('test') : undefined;
URLSearchParams
params.get('test') ?? undefined;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
URL
URLSearchParams

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Windows

View result in a separate tab

Test name	Executions per second
URL	6734483.0 Ops/sec
URLSearchParams	6887627.5 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 and explain what is being tested, compared, and the pros and cons of different approaches.

**Benchmark Overview**

The benchmark compares two ways to access the value of a query parameter in a URL using the `URLSearchParams` API. The test cases check whether accessing the value using `has()` and then `get()`, or using the nullish coalescing operator (`??`) returns the same result as returning `undefined`.

**Options Compared**

There are two options being compared:

1. **Using `has()` and then `get()`**: This approach uses the `has()` method to check if a parameter exists, and if it does, calls the `get()` method to retrieve its value.
2. **Using nullish coalescing operator (`??`)**: This approach uses the nullish coalescing operator to return the first operand (in this case, the result of `has()`) if it's not `null` or `undefined`, and the second operand (which is `undefined`) otherwise.

**Pros and Cons**

**Using `has()` and then `get()`**

Pros:

* This approach is explicit and easy to understand.
* It allows for better error handling, as the user can check whether the parameter exists before trying to access its value.

Cons:

* This approach requires two method calls, which might be slower than a single operator.
* If the parameter does not exist, `get()` will return `undefined`, which might not be what the user expects.

**Using nullish coalescing operator (`??`)**

Pros:

* This approach is concise and expressive.
* It allows for a more elegant way to handle the case where the parameter does not exist.

Cons:

* This approach requires knowledge of the nullish coalescing operator, which might not be familiar to all developers.
* If the parameter exists, the expression will evaluate to its value, rather than `undefined`.

**Library and Special JS Features**

There is no library used in this benchmark. However, it's worth noting that the `URLSearchParams` API is a built-in JavaScript API, introduced in ECMAScript 2015 (ES6).

The nullish coalescing operator (`??`) was also introduced in ES6.

**Other Considerations**

* The test cases are designed to measure the performance difference between these two approaches.
* The benchmark uses a fixed number of iterations (`loop = 10000`) to ensure consistent results.
* The test case uses a string literal (`param`) that represents a URL with query parameters, which is used to create an instance of `URLSearchParams`.

**Other Alternatives**

There are other ways to access the value of a query parameter in a URL using JavaScript. Some alternatives include:

* Using the `parse()` method of the `URL` API to parse the URL and extract the query parameters.
* Using the `split()` method to split the URL into its components and extract the query parameters manually.
* Using a third-party library or utility function that provides a way to access query parameters.

However, these alternatives may have different performance characteristics or require more complex code than the two approaches being compared in this benchmark.

Related benchmarks:

URLSearchParams.has vs URLSearchParams.get without undefined returning (version: 0)

Comparing performance of: URL vs URLSearchParams

Created: 2 years ago by: Guest

Jump to the latest result

URL

URLSearchParams

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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