Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
Feature Requests
FAQ
Register
Log In
Delete vs Destructure (Objects)
(version: 0)
Benchmark.js
Measure the performance of delete versus removing a prop from an object
Comparing performance of:
Delete vs Destructure
Created:
7 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var obj = { a:1, b:2, c:3 }
Tests:
Delete
delete obj.a delete obj.b console.log(JSON.stringify(obj, null, 4));
Destructure
var { a, b, ...rest } = obj; console.log(JSON.stringify(obj, null, 4));
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Delete
Destructure
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0
Browser/OS:
Firefox 124 on Mac OS X 10.15
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=518744" width="100%" height="500px"></iframe>
Destructure
157K/s
Delete
151K/s
View exact numbers
Test name
Executions per second
✓
Destructure
156,754 Ops/sec
Delete
151,128 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into explaining the provided benchmark. **Benchmark Overview** The benchmark measures the performance of two approaches to delete or remove properties from an object in JavaScript: using the `delete` keyword and destructuring with the spread operator (`...`). The test case uses a simple object with three properties: `a`, `b`, and `c`. **Options Compared** There are two options being compared: 1. **Delete**: Using the `delete` keyword to remove properties from an object. 2. **Destructure**: Using destructuring with the spread operator (`...`) to create a new object without the deleted properties. **Pros and Cons of Each Approach** ### Delete Pros: * Simple and straightforward syntax * Well-supported by most JavaScript implementations Cons: * Can cause unexpected behavior if not used carefully (e.g., deleting an array property can remove all elements) * Can lead to object reference counting issues in certain situations ### Destructure Pros: * Creates a new object without modifying the original * More concise and expressive syntax * Can be more efficient than `delete` for large objects Cons: * Requires understanding of destructuring syntax (introduced in ECMAScript 2015) * May not work as expected if the property name is a reserved word or a function name **Library and Purpose** There is no explicit library mentioned, but it's likely that the benchmark uses built-in JavaScript features for both options. **Special JS Features/Syntax** Neither of the test cases uses any special JavaScript features or syntax beyond the standard `delete` keyword and destructuring with the spread operator. **Other Alternatives** If you're looking for alternatives to these two approaches, consider: * Using a library like Lodash's `omit()` function, which can remove properties from an object without modifying it. * Using a JSON schema validation library, which can help enforce data integrity and consistency across different JavaScript implementations. In summary, the benchmark provides a simple yet informative comparison between using the `delete` keyword and destructuring with the spread operator to delete or remove properties from objects in JavaScript. The results highlight the performance differences between these two approaches, providing insights for developers who need to optimize their code for performance or other considerations.
Related benchmarks
Delete vs destructure for objects
Delete vs destructure for objects v2 2
Comments
Confirm delete:
Do you really want to delete benchmark?