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приведения к числу и строке в или выражении 3
(version: 2)
Comparing performance of:
idS === idN || idS === String(idN) || Number(idS) === idN vs idS === idN || idS === Number(idN) || String(idS) === idN vs idS === idN
Created:
2 years ago
by:
Registered User
Jump to the latest result
Script Preparation code:
const idS = '11'; const idN = 11;
Tests:
idS === idN || idS === String(idN) || Number(idS) === idN
const idS = '11'; const idN = 11; const res = idS === idN || idS === String(idN) || Number(idS) === idN
idS === idN || idS === Number(idN) || String(idS) === idN
const idS = '11'; const idN = 11; const res = idS === idN || idS === Number(idN) || String(idS) === idN
idS === idN
const idS = '11'; const idN = 11; const res = idS === idN
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
idS === idN || idS === String(idN) || Number(idS) === idN
idS === idN || idS === Number(idN) || String(idS) === idN
idS === idN
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and its options. **Benchmark Overview** The benchmark measures how fast JavaScript code can compare strings to numbers. It uses two types of data: string literals (`'11'`) and numeric literals (`11`). **Options Compared** There are three options compared in the benchmark: 1. `idS === idN`: Directly comparing a string literal with a numeric literal. 2. `idS === String(idN)`: Converting the numeric literal to a string using the `String()` function and then comparing it with the original string literal. 3. `Number(idS) === idN`: Attempting to convert the string literal to a number using the `Number()` function and then comparing it with the original numeric literal. **Pros and Cons of Each Option** 1. **Direct Comparison (`idS === idN`)**: * Pros: Simple, efficient, and fast. * Cons: May not work as expected if the string literal cannot be converted to a number (e.g., if it contains non-numeric characters). 2. **String Conversion (`idS === String(idN)`)**: * Pros: Works even if the string literal cannot be converted to a number, since `String()` will return the original string. * Cons: May be slower than direct comparison due to the additional function call. 3. **Number Conversion (`Number(idS) === idN`)**: * Pros: Can handle numeric literals that contain non-numeric characters or special values (e.g., NaN, Infinity). * Cons: May fail if the string literal cannot be converted to a number (e.g., if it contains non-numeric characters). **Library and Special JavaScript Features** There are no libraries used in this benchmark. However, some special JavaScript features may be implicitly used, such as: * String conversion (`String()`) and number conversion (`Number()`), which are built-in functions. * Template literals (not explicitly mentioned but implied by the use of string literals). **Other Alternatives** If you wanted to add more options to the benchmark, you could consider comparing strings using different encoding schemes (e.g., UTF-8) or using regular expressions. Additionally, if you wanted to measure performance in a more general sense, you could consider adding benchmarks for: * String comparison with string literals only * Number comparison with numeric literals only * Converting numbers to strings and vice versa Keep in mind that these alternatives would require additional modifications to the benchmark definition and test cases.
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