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spread operator vs push test
(version: 0)
Compare the new ES6 spread operator with and push Comparing performance of spread operator vs Push
Comparing performance of:
Spread Operator vs Push
Created:
6 years ago
by:
Guest
Go to the latest result
Tests:
Spread Operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
Push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].push(params);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Spread Operator
Push
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Mobile Safari/537.36 EdgA/127.0.0.0
Browser/OS:
Chrome Mobile 127 on Android
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=538971" width="100%" height="500px"></iframe>
Push
10.6M/s
Spread Operator
6.7M/s
View exact numbers
Test name
Executions per second
✓
Push
10,631,991 Ops/sec
Spread Operator
6,699,540 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks! The test case measures the performance difference between two approaches: using the spread operator (`...`) and pushing elements onto an array (`push()`). **Spread Operator Approach** In modern JavaScript, the spread operator allows you to expand an iterable (such as an array or a string) into individual elements. In this benchmark, the spread operator is used to create a new array `other` by spreading the elements of `params`. The syntax is: `[ ...params ]`. **Push Approach** The push approach involves creating a new array and then pushing each element from `params` onto it. The syntax is: `[ 1, 2 ].push(params)`. **Pros and Cons** * **Spread Operator**: Pros: + More concise and readable code + Can be faster for large arrays (since it avoids the overhead of creating a new array and then pushing elements) Cons: + May not work as expected with certain types of values (e.g., objects, functions) + Not supported in older browsers or environments * **Push Approach**: Pros: + More flexible and compatible with older browsers or environments + Can be used with any type of value, not just arrays or iterables Cons: + Less concise and less readable code + May be slower for large arrays (due to the overhead of creating a new array and pushing elements) **Library Used** There is no library explicitly mentioned in the benchmark definition. However, it's worth noting that JavaScript engines like V8 (used by Chrome) have optimized implementations for both spread operator and push approaches. **Special JS Feature or Syntax** The benchmark uses the ES6 spread operator (`...`), which was introduced in ECMAScript 2015. This feature allows you to expand an iterable into individual elements, making code more concise and readable. **Other Alternatives** If you're interested in exploring alternative approaches, here are a few options: * Using `Array.prototype.slice()` instead of the spread operator or push approach. * Implementing your own custom array creation and pushing logic. * Using other library functions like `Lodash` or `Underscore` to perform similar operations. Keep in mind that these alternatives might not provide significant performance improvements over the original benchmark, but they can be useful for specific use cases or requirements.
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