Benchmark: Lodash isPlainObject vs JS String Type Check

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.20/lodash.min.js"></script>

Script Preparation code:

var sampleObject = {
        "id": "0001",
        "type": "donut",
        "name": "Cake",
        "ppu": 0.55
    };
var isObject;

Tests:

Lodash isPlainObject
isObject = _.isPlainObject(sampleObject);
JS String Type Check
isObject = Object.prototype.toString.call(sampleObject) === '[object Object]';

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash isPlainObject
JS String Type Check

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4306.0 Safari/537.36

Browser/OS: Chrome 88 on Mac OS X 10.15.6

View result in a separate tab

Test name	Executions per second
Lodash isPlainObject	1369233.0 Ops/sec
JS String Type Check	3000377.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and explain what's being tested.

**Test Case Overview**

The test case compares two approaches to check if an object in JavaScript is of type `object` or not:

1. **Lodash's `isPlainObject()` method**: This function is part of the popular Lodash library, which provides a set of utility functions for functional programming and data manipulation.
2. **Using `Object.prototype.toString.call(sampleObject) === '[object Object]'`**: This approach uses the built-in `toString()` method of objects in JavaScript to check if an object's prototype chain includes the `Object` constructor.

**Pros and Cons of Each Approach**

1. **Lodash's `isPlainObject()` method**:
	* Pros: Fast and lightweight, as it's a native function in Lodash.
	* Cons: Requires importing Lodash, which may add overhead depending on the benchmark.
2. **Using `Object.prototype.toString.call(sampleObject) === '[object Object]'`**:
	* Pros: Built-in function, no additional dependencies required.
	* Cons: May be slower due to the overhead of calling `toString()` and checking the prototype chain.

**Library and Purpose**

The Lodash library is a popular JavaScript utility library that provides a wide range of functions for data manipulation, functional programming, and more. In this specific test case, `isPlainObject()` is used to check if an object is plain (i.e., not inherited from another object).

**Special JS Feature or Syntax**

There are no special features or syntax mentioned in the benchmark definition that require a deep understanding of JavaScript.

**Other Alternatives**

If you're looking for alternative ways to check if an object is of type `object`, here are a few options:

1. Using `instanceof Object`: This approach uses the `instanceof` operator to check if an object's prototype chain includes the `Object` constructor.
2. Checking the `constructor` property: You can use the `constructor` property of an object to check its type.
3. Using a custom function: Depending on your specific requirements, you might write a custom function to check if an object is plain.

Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to the two approaches tested in this benchmark.

Related benchmarks:

Lodash isPlainObject vs JS String Type Check (version: 0)

Comparing performance of: Lodash isPlainObject vs JS String Type Check

Created: 4 years ago by: Guest

Jump to the latest result

Lodash isPlainObject

JS String Type Check

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):