Benchmark: JSON vs URLSearchParams (decode)

Script Preparation code:

var dataJson = '{"funnelId":"test-funnel-id","channelId":"test-channel-id","metricName":"test-metric-name"}';
var dataUrl = 'funnelId=test-funnel-id&channelId=test-channel-id&metricName=test-metric-name'

Tests:

JSON.parse
var result = JSON.parse(dataJson)
URLSearchParams
var result = new URLSearchParams(dataUrl)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.parse
URLSearchParams

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Linux

View result in a separate tab

Test name	Executions per second
JSON.parse	2197600.2 Ops/sec
URLSearchParams	666319.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into explaining the benchmark and its components.

**Benchmark Purpose:**
The purpose of this benchmark is to compare the performance of two JavaScript methods: `JSON.parse()` and `URLSearchParams()`. The test case measures the execution speed of these two functions when decoding a JSON-formatted string (`dataJson`) and a URL-encoded string (`dataUrl`), respectively.

**Options Compared:**

1. **JSON.parse():**
	* This method is used to parse a JSON-formatted string into a JavaScript object.
	* The pros of using `JSON.parse()` are:
		+ Wide browser support, including older versions.
		+ Easy to use and understand.
	* However, the cons are:
		+ Can be slower for very large input data due to the need to parse the JSON string.
		+ May throw errors if the input is not a valid JSON string.
2. **URLSearchParams():**
	* This method is used to work with URL-encoded query strings and parse their contents into JavaScript objects.
	* The pros of using `URLSearchParams()` are:
		+ Can handle very large input data efficiently, as it's designed for parsing query strings.
		+ Returns a more robust object representation compared to `JSON.parse()`.
	* However, the cons are:
		+ May not work correctly in older browsers or with very specific JSON input formats.

**Special JS Features/Syntax:**
In this benchmark, the test case uses:

1. **URLSearchParams():** This library is a built-in API in modern JavaScript and is used to parse URL-encoded query strings.
2. No special JavaScript features or syntax are mentioned in the provided code.

**Library/Purpose:**
The `URLSearchParams()` function is a native JavaScript method for working with URL-encoded query strings. Its purpose is to provide an efficient way to decode and parse these strings into usable JavaScript objects.

**Other Alternatives:**

For parsing JSON-formatted strings, other alternatives include:

1. **JSON.at()**: A newer API introduced in ECMAScript 2020 (JavaScript standard), which provides a more modern and efficient way of parsing JSON.
2. **for...of loop with `String.prototype.split()`**: This approach can be used to parse a JSON-formatted string by splitting the input string into key-value pairs using `String.prototype.split()`, followed by iterating over these pairs using a `for...of` loop.

For URL-encoded query strings, other alternatives include:

1. **XMLHttpRequest or Fetch API with `.searchParams` property**: These APIs can be used to work with URL-encoded query strings and parse their contents into JavaScript objects.
2. **Third-party libraries like jQuery's `.serialize()` method**: However, these may introduce additional overhead and dependencies.

In summary, the `URLSearchParams()` function is a convenient and efficient way to work with URL-encoded query strings in modern JavaScript browsers. The choice of using `JSON.parse()` or `URLSearchParams()` ultimately depends on the specific requirements of your project, including factors like browser support, input data size, and desired output format.

Related benchmarks:

JSON vs URLSearchParams (decode) (version: 0)

Comparing performance of: JSON.parse vs URLSearchParams

Created: 2 years ago by: Guest

Jump to the latest result

JSON.parse

URLSearchParams

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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