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if-else vs switch v2
(version: 0)
Comparing performance of:
Switch case vs if-else
Created:
3 years ago
by:
Guest
Jump to the latest result
Tests:
Switch case
const a = 1; switch (true) { case a === 5: console.log("a is 5"); break; case a === 4: console.log("a is 4"); break; case a === 3: console.log("a is 4"); break; case a === 41: console.log("a is 4"); break; case a === 31: console.log("a is 4"); break; case a === 42: console.log("a is 4"); break; case a === 33: console.log("a is 4"); break; case a === 44: console.log("a is 4"); break; case a === 35: console.log("a is 4"); break; case a === 46: console.log("a is 4"); break; case a === 37: console.log("a is 4"); break; case a === 48: console.log("a is 4"); break; case a === 39: console.log("a is 4"); break; case a === 40: console.log("a is 4"); break; case a === 311: console.log("a is 4"); break; case a === 422: console.log("a is 4"); break; case a === 333: console.log("a is 4"); break; case a === 444: console.log("a is 4"); break; case a === 355: console.log("a is 4"); break; case a === 2: console.log("a is 2"); break; case a === 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 === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 3) { console.log("a is 4"); } else if (a === 2) { console.log("a is 2"); } else if (a === 1) { console.log("a is 1"); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Switch case
if-else
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the benchmark analysis. **Benchmark Definition** The benchmark definition is a JSON object that defines two test cases: `if-else` and `switch`. The purpose of this benchmark is to compare the performance of these two conditional statements in JavaScript. **Options Compared** The options being compared are: 1. **if-else**: A traditional if-else statement with multiple else-if branches. 2. **Switch**: A switch statement with a large number of cases (41). **Pros and Cons** Both options have their pros and cons: * **if-else**: * Pros: More intuitive, easier to read, and maintain. * Cons: Can lead to slower performance due to the multiple comparisons. * **Switch**: * Pros: Can be faster for large numbers of cases because it uses a jump table lookup. However, it can be less intuitive and more error-prone if not used correctly. * Cons: Requires careful case ordering and can lead to performance issues if the number of cases is very large. **Library Usage** In this benchmark, no specific JavaScript library is used. The script preparation code is empty, which means that the test cases are self-contained and do not rely on any external libraries or modules. **Special JS Features/Syntax** There is no special JavaScript feature or syntax being tested in this benchmark. It's a straightforward comparison of two common conditional statements. **Other Alternatives** Some alternative approaches to compare could be: 1. **Ternary Operators**: `a === 5 ? console.log("a is 5") : ...` 2. **Object-Based Conditional Statements**: Using objects to conditionally log messages. 3. **Regular Expressions**: Using regular expressions to match against a string. However, these alternatives are not included in the current benchmark definition. **Benchmark Preparation Code** The script preparation code is empty, which means that no additional setup or initialization is required for running the test cases. In conclusion, this benchmark compares the performance of traditional `if-else` statements with large numbers of else-if branches against switch statements. The results show a clear difference in performance between these two approaches, highlighting the importance of optimizing conditional logic in JavaScript code.
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