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endsWith vs
(version: 0)
Benchmark.js
Comparing performance of:
Regex vs endsWith
Created:
3 years ago
by:
Guest
Go to the latest result
Tests:
Regex
"this is a test" === "test"
endsWith
"this is a test".endsWith("test")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Regex
endsWith
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Browser/OS:
Chrome 136 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=607807" width="100%" height="500px"></iframe>
Regex
196.7M/s
endsWith
105.9M/s
View exact numbers
Test name
Executions per second
✓
Regex
196,738,320 Ops/sec
endsWith
105,878,568 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark. **Benchmark Overview** The provided JSON represents a benchmark that compares the performance of two string comparison methods: `===` (strict equality) and `.endsWith()` (a method to check if a string ends with another). The test is designed to measure which approach is faster. **Script Preparation Code** There is no Script Preparation Code specified, which means the test script will be generated automatically by MeasureThat.net. **Html Preparation Code** There is also no Html Preparation Code provided. This suggests that the HTML structure for the benchmark may not require any special configuration or setup. **Individual Test Cases** We have two individual test cases: 1. `"this is a test" === "test"`: This test case uses strict equality (`===`) to compare two strings. The `===` operator checks whether both values are equal and also of the same type. 2. `"this is a test".endsWith("test")`: This test case uses the `.endsWith()` method to check if the string `"this is a test"` ends with the suffix `"test"`. The `.endsWith()` method returns a boolean value indicating whether the original string ends with the specified suffix. **Pros and Cons of Approaches** 1. **Strict Equality (`===`)** * Pros: Fast, reliable, and suitable for most use cases. * Cons: Can be slower than other methods if the strings are not equal or if type coercion is involved (e.g., comparing a number with a string). 2. **`.endsWith()` Method** * Pros: Specifically designed for this purpose, can be faster due to optimized implementation in modern browsers. * Cons: Requires explicit method call and may have performance issues if the method is not implemented correctly. **Library/Functionality Used** In both test cases, there are no external libraries or functions being used. The `===` operator is a built-in JavaScript operator, and the `.endsWith()` method is part of the String prototype in modern browsers. **Special JS Feature/Syntax (None)** There's no special JavaScript feature or syntax being tested in this benchmark. **Other Alternatives** If you wanted to test other string comparison methods, you could consider adding more test cases, such as: * Using `String.prototype.includes()` to check if a substring is present. * Implementing your own custom string comparison function using regular expressions (e.g., `RegExp.test()`). * Comparing strings using different character encodings or normalization forms. Keep in mind that MeasureThat.net already provides a wide range of benchmark templates and options, so you may not need to create your own custom benchmarks.
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