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slice vs replace
(version: 0)
Benchmark.js
Comparing performance of:
replace vs slice
Created:
5 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var tag = "_REMOVE_ME_"; var strIn = tag + "foobar";
Tests:
replace
var strOut = strIn.replace(tag, "");
slice
var strOut = strIn.slice(tag.length)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
replace
slice
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Browser/OS:
Chrome 149 on Linux
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=629590" width="100%" height="500px"></iframe>
slice
268.5M/s
replace
47.4M/s
View exact numbers
Test name
Executions per second
✓
slice
268,485,824 Ops/sec
replace
47,373,936 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its test cases. **Benchmark Overview** The benchmark is comparing two approaches to create a substring from a larger string: `slice` and `replace`. Both methods are part of the JavaScript String prototype, which provides methods for manipulating strings. **Options Compared** The benchmark is testing the following two options: 1. **Slice**: `strIn.slice(tag.length)` 2. **Replace**: `strIn.replace(tag, "")` Both methods aim to extract a substring from the original string `strIn`, starting from the position indicated by `tag`. However, they achieve this in different ways. **Pros and Cons of Each Approach** 1. **Slice**: * Pros: Efficient and lightweight. The `slice` method uses a simple indexing operation, which is fast. * Cons: May not be as flexible or powerful as the `replace` method, especially for more complex substring extraction scenarios. 2. **Replace**: * Pros: More versatile and powerful than `slice`. The `replace` method can extract substrings using regular expressions or simple string replacement. * Cons: May be slower and heavier due to the overhead of regular expression processing. **Library** There is no explicit library mentioned in this benchmark. However, it's worth noting that both `slice` and `replace` methods are part of the built-in JavaScript String prototype, which means they don't require any external libraries or dependencies. **Special JS Features/Syntax** None are explicitly mentioned in this benchmark. However, if you're interested in exploring more advanced substring extraction techniques, you might want to look into regular expressions (e.g., `strIn.match(tag)`). **Other Alternatives** If you need to extract substrings from strings in JavaScript, some alternative approaches include: * Using a third-party library like [regex.js](https://github.com/zaaac regexjs) for more advanced substring extraction using regular expressions. * Employing string manipulation techniques like concatenation or template literals (e.g., `strIn + tag.slice(0, -4)`). Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to the `slice` and `replace` methods.
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