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test3 delete
(version: 0)
Comparing performance of:
delete o.p vs o.p = undefined
Created:
5 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var o = {}; o.p = {};
Tests:
delete o.p
delete o.p;
o.p = undefined
o.p = undefined;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
delete o.p
o.p = undefined
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Overview** The benchmark measures the performance of JavaScript `delete` operations on objects. Specifically, it tests two scenarios: 1. Deleting a property from an object using the `delete` operator (`delete o.p;`) 2. Setting a property to `undefined` (`o.p = undefined;`) **Options Compared** In this benchmark, only two options are compared: `delete` and assignment to `undefined`. **Pros and Cons of Each Approach** 1. **Delete**: The `delete` operator is a built-in JavaScript method that removes a property from an object. It's generally considered more efficient than assigning `undefined` to the property, as it avoids creating a new property descriptor. * Pros: More concise and readable, potentially faster execution time. * Cons: May not be supported in older browsers or versions of JavaScript. 2. **Assignment to undefined**: Assigning a value to a property using the assignment operator (`=`) and then setting it to `undefined` is another way to delete a property. * Pros: More explicit, potentially easier to read and maintain, works in all modern browsers and versions of JavaScript. * Cons: May be slightly slower than using the `delete` operator. **Library Used** In this benchmark, no external library is used. The tests are performed on native JavaScript code. **Special JS Feature or Syntax** There are no special JavaScript features or syntaxes being tested in this benchmark. It's a simple, straightforward test of two different deletion approaches. **Alternatives** If you're interested in testing other deletion methods, here are some alternatives: * Using the `Object.defineProperty` method to create a new property descriptor with `configurable: true`. * Using a library like Lodash or Underscore.js to implement deletion. * Testing other properties or objects, such as arrays or sets. Keep in mind that these alternative approaches may not be directly comparable to the `delete` and assignment-to-undefined methods used in this benchmark.
Related benchmarks:
delete test
test delete
test2 delete
test5 delete
Comments
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