Benchmark: Optional Chaining versus _.get lodash without badObj

Script Preparation code:

var obj = {a: {b: {c: {d: 1}}}}

Tests:

Optional Chaining
(obj.a == null ? undefined : obj.a.b == null ? undefined : obj.a.b.c == null ? undefined : obj.a.b.c.d) || 2
Lodash
_.get(obj, "a.b.c.d", 2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Optional Chaining
Lodash

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

**What is being tested:**

MeasureThat.net is testing two different approaches to access nested properties in an object:

1. **Optional Chaining**: This approach uses the nullish coalescing operator (`??`) and chaining comparison operators (`==`, `===`) to safely navigate through the object's structure.
2. **Lodash's _.get() method**: This is a utility function from the Lodash library that provides a way to safely access nested properties in an object.

**Options compared:**

The benchmark compares two options:

* Optional Chaining
* Lodash's _.get() method

**Pros and Cons of each approach:**

1. **Optional Chaining**:
	* Pros:
		+ Concise and expressive syntax
		+ Efficient, as it avoids unnecessary comparisons
		+ Works with modern JavaScript engines (e.g., V8)
	* Cons:
		+ May not be supported in older browsers or JavaScript versions
		+ Requires understanding of the nullish coalescing operator (`??`)
2. **Lodash's _.get() method**:
	* Pros:
		+ Wide browser support, including older versions
		+ Provides a clear and concise way to access nested properties
		+ Well-documented and widely used library
	* Cons:
		+ Requires including the Lodash library in your project
		+ May introduce additional dependencies

**Library:**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as string manipulation, array operations, and more. The `_.get()` method is specifically designed to safely access nested properties in an object.

**Special JS feature or syntax:**

The benchmark uses the nullish coalescing operator (`??`), which was introduced in ECMAScript 2020 (ES2020). This operator allows you to safely navigate through objects, avoiding null pointer exceptions. If you're not familiar with this operator, it's a new addition to modern JavaScript and is supported by most modern browsers and JavaScript engines.

**Other alternatives:**

If you prefer not to use Optional Chaining or Lodash's _.get() method, you can consider the following alternatives:

* **Brackets notation**: This approach uses brackets (`[]`) to access nested properties. For example, `obj['a']['b']['c']`.
* **Dot notation with null checks**: This approach uses dot notation (`.`) and null checks (`&&`) to access nested properties. For example, `(obj.a && obj.a.b && obj.a.b.c)`.

However, these alternatives may not be as concise or efficient as Optional Chaining or Lodash's _.get() method.

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Browser/OS: Chrome 92 on Windows

View result in a separate tab

Test name	Executions per second
Optional Chaining	3294327.2 Ops/sec
Lodash	2277426.5 Ops/sec

Related benchmarks:

Optional Chaining versus _.get lodash without badObj (version: 0)

Comparing performance of: Optional Chaining vs Lodash

Created: 3 years ago by: Guest

Jump to the latest result

Optional Chaining

Lodash

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):