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Object Creation: Bracket versus .DOT Notation
(version: 0)
Object Creation: Bracket versus .DOT Notation
Comparing performance of:
Bracket Notation vs .DOT Notation
Created:
9 years ago
by:
Guest
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Tests:
Bracket Notation
var obj = { "foo" : "bar" };
.DOT Notation
var obj ={}; obj.foo = "bar";
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Bracket Notation
.DOT Notation
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what is tested on MeasureThat.net. **Benchmark Definition** The benchmark definition represents a JavaScript microbenchmark that tests two different ways of creating objects: bracket notation (`{}`) versus dot notation (`.`). **Options Compared** Two options are compared: 1. **Bracket Notation**: Using curly brackets `{}` to create an object, e.g., `var obj = { "foo": "bar" };` 2. **Dot Notation**: Using a dot (`.`) followed by the property name to access and set values in an object, e.g., `var obj = {}; obj.foo = "bar";` **Pros and Cons** * **Bracket Notation**: + Pros: More explicit and readable way of creating objects. + Cons: Can be slower due to the overhead of parsing curly brackets. * **Dot Notation**: + Pros: Faster, as it eliminates the need for parsing curly brackets. + Cons: Less explicit and less readable. In general, bracket notation is more concise and easier to read, while dot notation is faster but may require more boilerplate code. **Library Usage** There is no library mentioned in the benchmark definition. The script creation relies solely on JavaScript's built-in features. **Special JS Feature/Syntax** The benchmark uses a feature called **Template Literals**, which was introduced in ECMAScript 2015 (ES6). Template literals allow you to create string templates with embedded expressions using backticks (`). In this case, the benchmark uses template literals to demonstrate object creation. **Other Alternatives** If you want to test different ways of creating objects, here are a few alternatives: * **Array Literals**: Instead of using bracket notation or dot notation, you could test array creation using square brackets `[]`. * **Object Creation with Class Constructors**: If you're using classes in your codebase, you could test object creation using class constructors. * **Using a Library like Lodash**: While not mentioned in this benchmark, libraries like Lodash provide utility functions for working with objects and arrays. Keep in mind that these alternatives might not be directly comparable to the bracket notation vs. dot notation comparison in this specific benchmark.
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