Benchmark: if [VS] switch case - v8

Script Preparation code:

var tipo_el = 'tipo4';
var arrPermision = ['tipo1', 'tipo2', 'tipo3', 'tipo4', 'tipo5'];

Tests:

switch case
switch(tipo_el){ case 'tipo1': case 'tipo2': case 'tipo3': case 'tipo4': case 'tipo5': console.dir('tipo aceitavel'); break; }
if ||
if(tipo_el == 'tipo1' || tipo_el == 'tipo2' || tipo_el == 'tipo3' || tipo_el == 'tipo4' || tipo_el == 'tipo5'){ console.dir('tipo aceitavel'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
switch case
if \|\|

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser/OS: Chrome 132 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
switch case	457904.4 Ops/sec
if \|\|	453548.6 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark and its various aspects.

**Benchmark Overview**

The provided JSON represents two JavaScript microbenchmarks, each testing different approaches for conditional execution: switch case and if-|| (also known as OR operator). These benchmarks are designed to measure the performance of these constructs in a controlled environment.

**Switch Case Benchmark**

For this benchmark, we're measuring the performance of the `switch` statement with multiple cases. The provided JavaScript code defines an array `arrPermision` and assigns it to a variable `tipo_el`. Then, it uses a `switch` statement to execute different blocks based on the value of `tipo_el`.

**Options Compared**

In this benchmark, we're comparing two approaches:

1. **Native Switch Case**: This is the native JavaScript implementation of the `switch` statement. It's implemented in the browser engine (V8) and optimized for performance.
2. **Dynamic OR Operator**: This approach uses a dynamic lookup table to evaluate the conditions. In this case, it simply checks if `tipo_el` matches any value in the `arrPermision` array.

**Pros and Cons**

1. **Native Switch Case**:
	* Pros: Native implementation, optimized for performance.
	* Cons: May have slower startup times due to compilation.
2. **Dynamic OR Operator**:
	* Pros: Can be more efficient than native switch case with large number of cases.
	* Cons: May require more memory and computation resources.

**If-|| Benchmark**

For this benchmark, we're measuring the performance of an `if` statement using the OR operator (`||`). The provided JavaScript code defines a variable `tipo_el` and uses it to evaluate multiple conditions using the OR operator.

**Options Compared**

In this benchmark, we're comparing two approaches:

1. **Native If-OR Operator**: This is the native JavaScript implementation of the `if` statement with the OR operator.
2. **Dynamic OR Operator (Alternative)**: This approach uses a similar dynamic lookup table as in the switch case benchmark.

**Pros and Cons**

1. **Native If-OR Operator**:
	* Pros: Native implementation, optimized for performance.
	* Cons: May have slower startup times due to compilation.
2. **Dynamic OR Operator (Alternative)**:
	* Pros: Can be more efficient than native if-or operator with large number of conditions.
	* Cons: May require more memory and computation resources.

**Library and Purpose**

In both benchmarks, no libraries are explicitly mentioned. However, the use of `console.dir` suggests that the console API is being used to output results.

**Special JS Feature or Syntax**

None are explicitly mentioned in this benchmark.

**Other Alternatives**

For switch case and if-|| operators, other alternatives include:

1. **Pattern Matching**: Some modern JavaScript engines (e.g., SpiderMonkey) support pattern matching, which can be more efficient than traditional switch cases.
2. **Loops**: In some cases, using loops instead of conditional statements might be a viable alternative.

Keep in mind that these alternatives may not always be the best choice and should be evaluated on a case-by-case basis.

Related benchmarks:

if [VS] switch case - v8 (version: 0)

Comparing performance of: switch case vs if ||

Created: 4 years ago by: Guest

Jump to the latest result

switch case

if ||

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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