Benchmark: if-else vs switch test 1

Tests:

Switch case
const a = 1; switch (a) { case 5: console.log("a is 5"); break; case 4: console.log("a is 4"); break; case 3: console.log("a is 4"); break; case 41: console.log("a is 4"); break; case 31: console.log("a is 4"); break; case 42: console.log("a is 4"); break; case 33: console.log("a is 4"); break; case 44: console.log("a is 4"); break; case 35: console.log("a is 4"); break; case 46: console.log("a is 4"); break; case 37: console.log("a is 4"); break; case 48: console.log("a is 4"); break; case 39: console.log("a is 4"); break; case 40: console.log("a is 4"); break; case 311: console.log("a is 4"); break; case 422: console.log("a is 4"); break; case 333: console.log("a is 4"); break; case 444: console.log("a is 4"); break; case 355: console.log("a is 4"); break; case 2: console.log("a is 2"); break; case 1: console.log("a is 1"); break; }
if-else
const a = 1; if (a == 5) { console.log("a is 5"); } else if (a == 4) { console.log("a is 4"); } else if (a == 3) { console.log("a is 4"); } else if (a == 32) { console.log("a is 4"); } else if (a == 33) { console.log("a is 4"); } else if (a == 34) { console.log("a is 4"); } else if (a == 35) { console.log("a is 4"); } else if (a == 36) { console.log("a is 4"); } else if (a == 37) { console.log("a is 4"); } else if (a == 38) { console.log("a is 4"); } else if (a == 39) { console.log("a is 4"); } else if (a == 123) { console.log("a is 4"); } else if (a == 333) { console.log("a is 4"); } else if (a == 433) { console.log("a is 4"); } else if (a == 413) { console.log("a is 4"); } else if (a == 532) { console.log("a is 2"); } else if (a == 1) { console.log("a is 1"); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Switch case
if-else

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Windows

View result in a separate tab

Test name	Executions per second
Switch case	156366.1 Ops/sec
if-else	156179.8 Ops/sec

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 Definition**

The benchmark definition is a JSON object that provides metadata about the test case, including its name, description, and preparation code for both JavaScript engines (not shown in this snippet). However, since no script preparation code is provided, we will assume that it's an empty string, implying that the benchmark can be run directly using the `BenchmarkDefinition` value.

The individual test cases are:

1. **Switch case**: This test case checks the performance of a switch statement with multiple cases.
2. **if-else**: This test case checks the performance of an if-else statement with multiple conditions.

**Options Compared**

In this benchmark, two options are being compared:

* Switch statement vs If-Else statement
* Both tests use JavaScript, but we can infer that the switch statement has a larger number of cases and more complex logic.

**Pros and Cons of Each Approach**

1. **Switch Statement:**
	* Pros:
		+ Can be faster for large numbers of cases due to the compiler optimizations (e.g., branch prediction).
		+ Can lead to better code completion and auto-completion in IDEs.
	* Cons:
		+ More verbose and harder to read for a large number of cases.
2. **If-Else Statement:**
	* Pros:
		+ Easier to read, understand, and maintain, especially for smaller numbers of conditions.
		+ Less prone to logical errors.
	* Cons:
		+ Can be slower due to the overhead of multiple conditional checks.

**Other Considerations**

* The number of cases in the switch statement is quite large, which could impact performance. This might indicate that the compiler optimizations are not sufficient or that there's an underlying issue with the JavaScript engine.
* There's no mention of any library or framework being used in these tests, so we can assume they're running on vanilla JavaScript engines.

**Special JS Features**

There doesn't seem to be any special JS features or syntax being tested here. These tests are focusing on basic control flow structures.

**Alternatives**

If you want to create a similar benchmark for other control flow structures, you might consider the following alternatives:

* For loops vs While loops
* Recursive functions vs Iterative functions
* Map vs Filter with array methods

Keep in mind that these alternative benchmarks would require creating new test cases and adjusting the script preparation code accordingly.

Related benchmarks:

if-else vs switch test 1 (version: 0)

Comparing performance of: Switch case vs if-else

Created: one year ago by: Guest

Jump to the latest result

Switch case

if-else

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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