Benchmark: Object.values at index vs access name of property

Script Preparation code:

var objToSearch = {
  'blah': 'stuff',
  'lookAtThis': 'nnoWay',
  'canYouBelieveIt': 'thisIsCrazy',
  'suchProperty': 'wow',
  'amazing': 'iKnow'
};
var keyToSearchFor = 'canYouBelieveIt';
var indexFound = 2;
var foundValue = '';

Tests:

object.values
foundValue = Object.values(objToSearch)[indexFound];
access property name
foundValue = objToSearch[keyToSearchFor];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
object.values
access property name

Fastest: N/A

Slowest: N/A

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

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Let's break down the provided JSON and explain what is being tested, the options compared, pros and cons of each approach, library usage, special JavaScript features or syntax, and other considerations.

**What is being tested:**

The benchmark is comparing two ways to retrieve values from an object:

1. Using `Object.values()`: This method returns an array of values stored in the object.
2. Accessing a property by its name using the dot notation (`objToSearch[keyToSearchFor]`).

**Options compared:**

The two options being compared are:

* `Object.values()` with an index
* Accessing a property by its name using the dot notation

**Pros and Cons of each approach:**

1. **Object.values() with an index**:
	* Pros:
		+ More readable and maintainable code, as it explicitly states the intention to access an array.
		+ Can be useful when working with arrays or objects that need indexing.
	* Cons:
		+ May not be as fast as accessing a property by its name, since `Object.values()` needs to iterate over the object's properties and return them in an array.
2. **Accessing a property by its name using the dot notation**:
	* Pros:
		+ Typically faster than `Object.values()`, since it directly accesses a single property without creating an array or iterating over all properties.
	* Cons:
		+ Less readable and maintainable code, as it relies on a magic string (the property name).
		+ Can lead to errors if the property is not found or if its name changes.

**Library usage:**

There is no explicit library mentioned in the benchmark definition. However, `Object.values()` is a built-in JavaScript method that returns an array of values stored in the object.

**Special JavaScript features or syntax:**

* `let` and `const` declarations are used in the script preparation code to declare variables.
* Template literals (the `\r\n` notation) are also used in the script preparation code for string concatenation.

**Other considerations:**

The benchmark definition does not include any error handling, caching, or optimization techniques. The test cases only focus on comparing the performance of two different approaches to retrieve values from an object.

As for alternatives, other ways to access properties by their name might include:

* Using a `switch` statement (although this is generally discouraged in modern JavaScript).
* Creating a lookup table or dictionary.
* Using a library like Lodash or Underscore.js that provides utility functions for working with objects and arrays.

In general, the choice between using `Object.values()` or accessing properties by their name depends on the specific use case and personal preference. However, when performance is critical, accessing properties by their name might be a better approach.

Related benchmarks:

Object.values at index vs access name of property (version: 0)

Comparing performance of: object.values vs access property name

Created: 4 years ago by: Guest

Jump to the latest result

object.values

access property name

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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