Benchmark: if/switch1 - MeasureThat.net

Tests:

if
const a = 1; if (a == 5) { console.log("a is 5"); } else if (a == 4) { console.log("a is 4"); } else if (a == 1) { console.log("a is 4"); }
switch
const a = 1; switch (a) { case 5: console.log("a is 5"); break; case 4: console.log("a is 4"); break; case 1: console.log("a is 1"); break; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
if
switch

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and explore what's being tested on MeasureThat.net.

**Benchmark Definition:**
The benchmark definition is essentially a JSON object that contains metadata about the test case, such as its name, description, script preparation code, and HTML preparation code. In this case, there are two test cases:

* `if/switch1`: This test case compares the execution time of an `if` statement versus a `switch` statement with multiple cases.
* `switch`: This test case is similar to the previous one but only runs the `switch` statement.

**Options Compared:**
The options being compared are:

* `if` statement
* `switch` statement

Both statements are used for conditional execution, but they have different syntax and performance characteristics. The goal of this benchmark is to determine which statement is faster in a given scenario.

**Pros and Cons:**

### If Statement:
Pros:

* Simpler syntax
* Easier to read and understand
* Can be more intuitive for simple conditions

Cons:

* Can be slower than `switch` statements with multiple cases due to the overhead of evaluating the condition
* May lead to unnecessary comparisons (e.g., `a == 5`) which can slow down performance

### Switch Statement:
Pros:

* Can be faster than `if` statements with multiple conditions due to the branch prediction and instruction-level parallelism
* Allows for more concise code when dealing with multiple cases

Cons:

* More complex syntax, which can make it harder to read and understand for some developers
* Requires the use of `break` statements to exit the switch block, which can add complexity

**Library Usage:**
In both test cases, there is no explicit library usage mentioned. However, it's worth noting that some JavaScript engines (e.g., V8) have internal optimizations and heuristics for conditional execution.

**Special JS Features/Syntax:**
There are no special JavaScript features or syntax being tested in this benchmark. The focus is on comparing the performance of basic `if` and `switch` statements.

**Alternative Benchmarks:**
Other alternatives to measure JavaScript performance include:

* Micro-benchmarking frameworks like [Benchmark.js](https://github.com/benmosher/benchmarkjs) or [Fast.js](https://fastjs.dev/)
* Online platforms like [JsPerf.com](http://jsperf.com/) or [Bench.js](https://benchjs.org/)

These alternatives can provide more comprehensive results, including comparison of multiple JavaScript engines and versions.

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/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Windows

View result in a separate tab

Test name	Executions per second
if	279669.3 Ops/sec
switch	273636.2 Ops/sec

Related benchmarks:

if/switch1 (version: 0)

Comparing performance of: if vs switch

Created: one year ago by: Guest

Jump to the latest result

if

switch

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):