Benchmark: Switch vs Object Literals - Speed Test

Script Preparation code:

 let startDateRange = ''
 let endDateRange = ''
 let startDateRangeLabel = ''
 let endDateRangeLabel = ''
 const formRequestType = 'FORM_REQUEST_VIEW.SCHEDULED'

Tests:

Switch
const formRequestType = 'FORM_REQUEST_VIEW.SCHEDULED' switch (formRequestType) { case 'FORM_REQUEST_VIEW.SENT': startDateRangeLabel = 'Sent from' endDateRangeLabel = 'Sent to' break case 'FORM_REQUEST_VIEW.SCHEDULED': startDateRangeLabel = 'Scheduled from' endDateRangeLabel = 'Scheduled to' break case 'FORM_REQUEST_VIEW.REQUEST_FORM': startDateRangeLabel = 'Submitted from' endDateRangeLabel = 'Submitted to' break default: }
Object Literal
function getLabels (type) { var labels = { 'FORM_REQUEST_VIEW.SENT': () => { startDateRangeLabel = 'Sent from' endDateRangeLabel = 'Sent to' }, 'FORM_REQUEST_VIEW.SCHEDULED': () => { startDateRangeLabel = 'Scheduled from' endDateRangeLabel = 'Scheduled to' }, 'FORM_REQUEST_VIEW.REQUEST_FORM': () => { startDateRangeLabel = 'Submitted from' endDateRangeLabel = 'Submitted to' }, }; return labels[type](); } var lable = getLabels('FORM_REQUEST_VIEW.SCHEDULED');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Switch
Object Literal

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and the pros and cons of each approach.

**What is being tested?**

The benchmark is testing two approaches to switch cases in JavaScript:

1. **Switch Statement**: The traditional switch statement, which uses a series of `case` statements to execute different blocks of code based on a value.
2. **Object Literal**: An object literal-based approach, where the switch case is implemented using an object with method calls.

**Options being compared**

The benchmark is comparing the performance of these two approaches:

* Switch Statement
	+ Pros:
		- Well-established and widely used syntax
		- Can be more readable for complex cases
	+ Cons:
		- May lead to longer execution times due to the overhead of branch prediction and speculation
		- Can result in slower performance when dealing with large numbers of cases
* Object Literal
	+ Pros:
		- Can be faster due to the use of method calls, which can be optimized by JavaScript engines
		- Allows for more flexibility and extensibility (e.g., adding new methods without modifying existing code)
	+ Cons:
		- May require more planning and setup to implement correctly
		- Not as widely used or well-established as the traditional switch statement

**Library usage**

In this benchmark, no libraries are explicitly mentioned. However, it's worth noting that some JavaScript engines (like V8) have optimized certain features and syntaxes in their implementations.

**Special JS feature or syntax**

The benchmark is using a relatively new JavaScript feature: **template literals**. Template literals allow you to embed expressions inside string literals, which can be useful for creating more readable and dynamic code. In this case, template literals are used to create the object literal-based switch statement.

**Benchmark preparation code**

The script preparation code sets up some variables for use in the benchmark:

* `startDateRange` and `endDateRange` are empty strings
* `startDateRangeLabel` and `endDateRangeLabel` are initialized with default values
* `formRequestType` is set to `'FORM_REQUEST_VIEW.SCHEDULED'`

**Individual test cases**

The benchmark has two test cases:

1. **Switch Statement**
	+ The code uses a traditional switch statement with multiple `case` statements.
2. **Object Literal**
	+ The code defines an object literal `labels` that contains method calls for each case.
	+ The `getLabels` function takes a value and returns the corresponding method call.

**Latest benchmark result**

The latest benchmark results show the execution rates for both test cases:

* Switch Statement: ~1.24 million executions per second
* Object Literal: ~117.92 thousand executions per second

Keep in mind that these results may vary depending on the specific JavaScript engine, platform, and other factors.

**Alternatives**

Other alternatives to switch statements or object literal-based approach could include:

* **Arrays**: Using an array of case values and indexing into it using `indexOf()` could be a possible alternative.
* **Map**: Similar to objects, but with key-value pairs that can be used for lookups.
* **Regex**: Using regular expressions to implement the switch statement or object literal-based approach.

However, these alternatives may come with their own trade-offs in terms of performance, readability, and maintainability.

Related benchmarks:

Switch vs Object Literals - Speed Test (version: 0)

Comparing performance of: Switch vs Object Literal

Created: 2 years ago by: Guest

Jump to the latest result

Switch

Object Literal

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):