Benchmark: If vs Object Literal

Script Preparation code:

var str = 'abc';
str = str.charAt(Math.floor(Math.random() * 3));

Tests:

If
if (str === 'a') { console.log('A'); } else if (str === 'b') { console.log('B'); } else { console.log('C'); }
Object Literal
var objLiteral = { a: function() { console.log('A'); }, b: function() { console.log('B'); }, c: function() { console.log('C'); } } objLiteral[str]();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
If
Object Literal

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model gemma2:9b, generated one year ago):

LLMs can make mistakes. Check important info.

This benchmark compares two ways of checking if a variable `str` holds the values 'a', 'b', or 'c':

**1.  If Statement:** This approach uses a traditional `if-else if-else` statement chain to compare `str` against each possible value and log the corresponding letter.

**2. Object Literal with Functions:** This method defines an object where keys are the possible values ('a', 'b', 'c'), and each key is associated with a function that logs the corresponding letter. The chosen function is then executed based on the value of `str`.

**Pros and Cons:**

* **If Statement:** 
    * **Pros:** Generally considered more readable and intuitive for simple conditional logic.
    * **Cons:** Can become verbose for many conditions, potentially impacting readability.
* **Object Literal with Functions:**
    * **Pros:**  Can be concise for a large number of conditions. Allows grouping related behavior together in the object.
    * **Cons:** Might feel less intuitive than `if-else` statements for basic comparisons.

**Other Considerations:**

* In this specific case, both methods are relatively performant due to the simplicity of the task.  Benchmark results show a negligible difference between the two approaches.

**Alternatives:**

Besides the two presented options, JavaScript offers other ways to achieve similar results:

* **Switch Statement:** Can be more efficient than `if-else` chains for multiple conditions, especially when dealing with constant values like in this benchmark.
* **Maps:** For dynamic condition mapping where keys are not fixed constants, Maps offer a flexible and performant alternative to object literals.

Let me know if you have any further questions!

Related benchmarks:

If vs Object Literal (version: 0)

Comparing performance of: If vs Object Literal

Created: 3 years ago by: Guest

Jump to the latest result

If

Object Literal

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model gemma2:9b, generated one year ago):