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if-else vs switch vs if
(version: 0)
Comparing performance of:
Switch case vs if-else vs IF
Created:
3 years ago
by:
Guest
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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 == 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"); }
IF
const a = 1; if (a == 5) { console.log("a is 5"); } if (a == 4) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 3) { console.log("a is 4"); } if (a == 2) { console.log("a is 2"); } if (a == 1) { console.log("a is 1"); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
Switch case
if-else
IF
Fastest:
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Slowest:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down what's being tested in the provided benchmark. The benchmark compares three different approaches to handle multiple values: 1. **Switch case**: This approach uses a switch statement with multiple cases to handle different values. The script checks the value of `a` and executes the corresponding code block. 2. **if-else chain**: This approach uses a series of if statements to check the value of `a` and execute the corresponding code block. Each if statement is chained together, allowing for multiple conditions to be checked in sequence. 3. **IF (with redundant nesting)**: This approach uses a single IF statement with excessive nesting to check the value of `a`. The idea behind this approach is to demonstrate how inefficient it can be. The benchmark measures the number of executions per second for each approach, which provides an indication of their performance relative to each other. Here are some key observations about these approaches: * **Switch case** and **IF** (with redundant nesting) have similar performance characteristics, with slight variations depending on the browser version. This is because both approaches involve a similar number of conditional checks. * **if-else chain**, however, consistently outperforms the other two approaches due to its simplicity and lack of unnecessary nesting. In general, switch cases are often considered more efficient than if-else chains when dealing with multiple values because they can reduce the number of comparisons required. However, in this specific benchmark, the if-else chain emerges as the clear winner due to its simplicity and minimal overhead.
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