Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
asdasds
(version: 0)
a
Comparing performance of:
Object.assign var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params); var params = { b:"he vs spread operator
Created:
3 years ago
by:
Guest
Jump to the latest result
Tests:
Object.assign var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params); var params = { b:"he
var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params);
spread operator
var params = { b:"hello", c: true, d:7 }; var other = { a: 2, ...params };
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Object.assign var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params); var params = { b:"he
spread operator
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the explanation into smaller parts to make it easier to understand. **Benchmark Definition JSON** The benchmark definition is empty, which means that no specific script or code needs to be executed beforehand. This suggests that the benchmark focuses on measuring the performance of a specific JavaScript operation or feature. **Options Compared** There are two test cases: 1. **Object.assign with spread syntax**: The first test case uses the spread operator (`...`) to merge an object `params` into another object `{ a: 2 }`. This option is compared to the traditional way of using `Object.assign()` method. 2. **Traditional Object.assign()**: The second test case uses the traditional `Object.assign()` method to merge the objects. **Pros and Cons** * **Spread Operator (Option 1)**: + Pros: More concise and expressive, allowing for easier object merging. + Cons: May have performance overhead due to the creation of a new array or object, depending on the browser implementation. * **Traditional Object.assign() (Option 2)**: + Pros: Well-established and widely supported, with a predictable performance profile. + Cons: May require more code to achieve the same result as the spread operator. **Library and Purpose** There is no specific library mentioned in the benchmark definition. However, both `Object.assign()` methods rely on the ECMAScript 2015 (ES6) standard for spread syntax support. **Special JS Feature or Syntax** The test cases use the spread operator (`...`), which is a feature introduced in ES6. It allows for more concise and expressive object merging. The traditional `Object.assign()` method was available before ES6, but it's still widely supported. **Other Alternatives** If you're interested in alternative ways to merge objects in JavaScript, here are a few options: * **Lodash.merge()**: A popular utility library that provides a safe and efficient way to merge objects. * **JSON Merge Patch (JMP)**: A lightweight algorithm for merging two objects based on their JSON representations. Keep in mind that these alternatives may have different performance profiles or trade-offs compared to the traditional `Object.assign()` method or the spread operator.
Related benchmarks:
Iterating over string
regex benchmark
1f6e53a6-0de2-4e9e-b160-f502c0678a94
The Public Suffix List set or obj
IndexOf vs Includes in string - larger string edition
Comments
Confirm delete:
Do you really want to delete benchmark?