Benchmark: HasOwnProperty vs classical if

Script Preparation code:

for (i = 0; i < 10; i++) {

}

Tests:

hasOwnProperty
const object = { property1: 1 } Object.setPrototypeOf(object, { property2: 2 }); const result = object.hasOwnProperty('property1');
classical if
const object = { property1: 1 } Object.setPrototypeOf(object, { property2: 2 }); const result = object.property1 ? true : false;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
hasOwnProperty
classical if

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark measures the performance difference between two approaches to check if a property exists in an object: `hasOwnProperty` and classical if-conditional checks.

**Options Compared**

Two options are compared:

1. **`hasOwnProperty`**: This method is part of the Object interface and returns a boolean value indicating whether the specified property exists in the object.
2. **Classical if-conditional check**: A traditional if-statement that checks if the property exists using the `in` operator.

**Pros and Cons**

**`hasOwnProperty`**:

Pros:

* Efficient, as it only checks if the property exists without searching for its value.
* Implemented in native JavaScript, making it faster than classical approaches.

Cons:

* Requires the object to be set up with a prototype chain (as shown in the benchmark), which might not always be the case.
* May have limitations when working with older browsers or environments that don't support this method.

**Classical if-conditional check**:

Pros:

* Simple and widely supported, making it easier to implement and understand.
* Works without modifying the object's prototype chain.

Cons:

* Less efficient than `hasOwnProperty`, as it also searches for the property's value.
* Might lead to slower performance in modern browsers or environments that optimize JavaScript execution.

**Library Used**

The `Object` library is used, which provides the `hasOwnProperty` method. This method is part of the ECMAScript standard and is implemented in native JavaScript, making it fast and efficient.

**Special JS Feature/Syntax**

None mentioned in this benchmark. However, if you're interested in exploring other features, some notable examples include:

* `let` and `const` declarations for variable hoisting
* Arrow functions (`=>`) for concise function expressions
* Template literals (e.g., `${}`) for string interpolation

**Other Alternatives**

Some alternative approaches to check if a property exists in an object include:

1. Using the `in` operator with a try-catch block: `if (obj.hasOwnProperty('property')) { ... }`
2. Using the `Object.keys()` method and checking if the array contains the property name: `if (Object.keys(obj).includes('property')) { ... }`
3. Using a library like Lodash, which provides a `hasOwnProperty` function that can be used instead of the native implementation.

For this benchmark, the comparison between `hasOwnProperty` and classical if-conditional checks is likely intended to demonstrate the performance difference between these approaches.

Related benchmarks:

HasOwnProperty vs classical if (version: 0)

Comparing performance of: hasOwnProperty vs classical if

Created: 5 years ago by: Guest

Jump to the latest result

hasOwnProperty

classical if

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):