Benchmark: Object.values(obj) vs for...in

Script Preparation code:

function extractValues(obj) {
   const result = [];
   for(var key in obj) { result.push(obj[key]); }
   return result;
}

Tests:

Object.values(obj)
var a = { a: 1, b: 2, c: 3}; Object.values(a);
for...in
var a = { a: 1, b: 2, c: 3}; extractValues(a);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.values(obj)
for...in

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

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Let's break down the benchmark test case.

**What is being tested?**

The test case compares two ways of extracting values from an object:

1. Using the `Object.values()` function
2. Using a traditional `for...in` loop with `result.push(obj[key])`

**What options are compared?**

Two options are compared:

* `Object.values(a);`: This uses the modern JavaScript feature `Object.values()` to extract the values from an object.
* `extractValues(a);`: This uses a traditional `for...in` loop and manual iteration to extract the values.

**Pros and Cons:**

Here's a brief summary of the pros and cons of each approach:

1. **Object.values()**: This method is concise, easy to read, and efficient. It returns an array of values extracted from the object.
	* Pros:
		+ Concise code
		+ Easy to understand
		+ Efficient execution
	* Cons:
		+ Requires modern JavaScript support (ES6+)
2. **for...in loop**: This traditional approach uses a manual loop to iterate over the object's keys and extract values.
	* Pros:
		+ Works in older browsers that don't support `Object.values()`
		+ Can be useful for educational purposes or specific use cases
	* Cons:
		+ Less concise code
		+ May have performance issues due to loop overhead

**Library used:**

No external library is used in this test case.

**Special JavaScript feature or syntax:**

The `Object.values()` function is a modern JavaScript feature introduced in ECMAScript 2015 (ES6). It returns an array of values extracted from the object, ignoring property names.

If you're not familiar with `Object.values()`, it's similar to using `Object.keys()` but instead returns an array of values instead of keys.

Related benchmarks:

Object.values(obj) vs for...in (version: 0)

Object.values(obj) function vs using a for...in loop.

Comparing performance of: Object.values(obj) vs for...in

Created: 6 years ago by: Guest

Jump to the latest result

Object.values(obj)

for...in

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):