Benchmark: native object access vs lodash get

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function nativeDotOperator(obj) {
  	return obj.myfield;
}

function nativeBracketOperator(obj) {
  return obj['myfield'];
}

function lodashGet(obj) {
  return _.get(obj, 'myfield');
}

Tests:

native dot operator
nativeDotOperator({ myfield: 'the answer is 42' });
native bracket operator
nativeBracketOperator({ myfield: 'the answer is 42' });
lodash get
lodashGet({ myfield: 'the answer is 42' });
native dot operator empty
nativeDotOperator({});
native bracket operator empty
nativeBracketOperator({});
lodash get empty
lodashGet({});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
native dot operator
native bracket operator
lodash get
native dot operator empty
native bracket operator empty
lodash get empty

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):

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the provided benchmark.

**Benchmark Overview**

The benchmark measures the performance of three different approaches to access a property in an object: native dot operator, native bracket operator, and Lodash `get` function. The benchmark is run on Chrome 94 browser on a desktop machine running Mac OS X 10.14.6.

**Options Being Compared**

1. **Native Dot Operator**: This approach uses the dot operator (`.`) to access the `myfield` property of an object.
2. **Native Bracket Operator**: This approach uses the bracket notation (`[]`) to access the `myfield` property of an object.
3. **Lodash Get Function**: This approach uses the Lodash library's `get` function to access the `myfield` property of an object.

**Pros and Cons of Each Approach**

1. **Native Dot Operator**:
	* Pros: Fast, easy to read, and concise.
	* Cons: May not work for objects with nested properties or non-enumerable properties.
2. **Native Bracket Operator**:
	* Pros: Works for objects with nested properties or non-enumerable properties.
	* Cons: Can be slower due to the overhead of bracket notation.
3. **Lodash Get Function**:
	* Pros: Flexible, works for objects with nested properties, and can handle non-enumerable properties.
	* Cons: Requires the Lodash library, which may introduce additional dependencies.

**Library Used**

The Lodash library is used in the benchmark to provide a flexible way to access object properties. The `get` function is specifically designed to work with objects and allows for optional arguments to specify default values or fallbacks.

**Special JS Feature/Syntax**

None of the test cases use any special JavaScript features or syntax that require explanation.

**Other Considerations**

* The benchmark only tests the performance of these three approaches on empty and non-empty objects. In a real-world scenario, you may want to add more test cases to cover other scenarios.
* The benchmark is run on a single browser version (Chrome 94) and platform (Mac OS X 10.14.6). Running benchmarks on multiple browsers and platforms can provide more accurate results.

**Alternatives**

If you're looking for alternative ways to access object properties, consider the following:

1. **Property Access with Object Literal Syntax**: This approach uses the object literal syntax (`obj.myfield`) to access properties.
2. **Arrow Functions**: Arrow functions can be used as property accessors, similar to native dot operator.
3. **Template Literals**: Template literals can be used to create dynamic strings that include object properties.

Keep in mind that these alternatives may have different performance characteristics or use cases compared to the native dot operator and Lodash `get` function.

Related benchmarks:

native object access vs lodash get (version: 0)

Comparing performance of: native dot operator vs native bracket operator vs lodash get vs native dot operator empty vs native bracket operator empty vs lodash get empty

Created: 4 years ago by: Guest

Jump to the latest result

native dot operator

native bracket operator

lodash get

native dot operator empty

native bracket operator empty

lodash get empty

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):