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slice vs substr vs sdsgubstring (with no end index)
(version: 0)
Benchmark.js
Compares slice, substr and substring to each other when there is only a start index
Comparing performance of:
slice vs substr vs substring vs sdgdsgdsg
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var example = 'there is no spoon'
Tests:
slice
var result = example.slice(10, 11)
substr
var result = example.substr(10, 1)
substring
var result = example.substring(10, 1)
sdgdsgdsg
var result = example[10]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
slice
substr
substring
sdgdsgdsg
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Browser/OS:
Chrome 123 on Mac OS X 10.15.7
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=516611" width="100%" height="500px"></iframe>
substring
27.5M/s
slice
27.4M/s
substr
27.1M/s
sdgdsgdsg
26.9M/s
View exact numbers
Test name
Executions per second
✓
substring
27,504,372 Ops/sec
slice
27,350,642 Ops/sec
substr
27,067,714 Ops/sec
sdgdsgdsg
26,930,996 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation of the provided benchmark. **Benchmark Definition** The benchmark measures the performance difference between three JavaScript string methods: `slice()`, `substr()`, and `substring()` when used with only a start index, without an end index. **Options Compared** * `slice()`: Returns a new string containing the characters from the specified start index up to but not including the end index. * `substr()`: Returns a substring of the string that begins at the specified start index and is the specified length. * `substring()`: Same as `substr()`. **Pros and Cons** * **slice()**: Pros: + Returns a new string, which can be beneficial for avoiding side effects. + Can be more efficient than other methods when only using the start index. * Cons: + Can create unnecessary allocations if not used with an end index. * `substr()` and `substring()`: Both are similar to each other. Pros: + Return a substring, which can be beneficial for avoiding side effects. + Use less memory than creating a new string with slice() when the start and end indices are close. However, both methods use the same underlying implementation and have similar performance characteristics. **Special Consideration** There is no special consideration for this benchmark as it only tests the performance of basic string methods without any additional features or syntax. **Library Used** None. The benchmark only uses built-in JavaScript string methods. **Other Alternatives** If you want to test more advanced string methods, you could consider adding `replace()`, `indexOf()`, `lastIndexOf()`, and other similar methods. Alternatively, you can also test different types of strings (e.g., Unicode strings) or use regular expressions to create a more comprehensive benchmark. It's worth noting that the `sdgdsgdsg` test case is likely an error in the benchmark definition. It should probably be replaced with either `substr()` or `substring()`, but not both, as they have different behavior when used with only a start index.
Related benchmarks
slice vs substr vs substring with end
slice vs substring (with no end index)
slice vs substring (with end index)
slice vs substr vs substrings
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