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k kajsldfjla
(version: 0)
k
Comparing performance of:
indexOf vs includes
Created:
2 years ago
by:
Guest
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Script Preparation code:
window.words = 'Hello to the new world i am excited that you are here bigword biggerword biggestword themostbiggestwordever cheese kitty mouse rat alkgjhasjfalskfdjalsjfllajdsfakaljsfdlajs'.split(' ');
Tests:
indexOf
words.indexOf('themostbiggestwordever')>=0
includes
words.includes('themostbiggestwordever')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
indexOf
includes
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided JSON and explain what's being tested, compared options, pros and cons, library usage, special JS features, and other considerations. **Benchmark Definition** The benchmark definition is a simple JavaScript expression that tests two string methods: 1. `words.indexOf('themostbiggestwordever') >= 0` 2. `words.includes('themostbiggestwordever')` These expressions are used to search for the presence of a specific string within a large string array (`window.words`). **Script Preparation Code** The script preparation code initializes a global variable `window.words` with a long string that contains various words, including "themostbiggestwordever". This string is split into an array using the `split()` method. **Html Preparation Code** There is no HTML preparation code provided. **Comparison of Options** Two options are compared: 1. **indexOf**: Searches for the index of a specified character within the string array. 2. **includes**: Returns a boolean indicating whether a specified value is present in the string array. **Pros and Cons** * `indexOf`: + Pros: Generally faster than `includes`, especially for large strings, since it returns an index instead of a boolean value. + Cons: May return -1 if the character is not found, which can be slower than returning false from `includes`. * `includes`: + Pros: Simpler and more intuitive to use, with fewer potential pitfalls. + Cons: Generally slower than `indexOf` for large strings. **Library Usage** There are no external libraries used in this benchmark. **Special JS Features** None mentioned. **Other Considerations** The benchmark only tests the performance of these two string methods on a specific browser (Firefox 118) and device platform (Desktop, Mac OS X 10.15). It's essential to note that results may vary across different browsers, devices, and platforms. **Alternatives** If you're looking for alternatives or want to test other JavaScript features, you can explore the following: 1. Other string methods: `includes`, `indexOf`, `lastIndexOf`, `charAt`, etc. 2. Array methods: `filter()`, `map()`, `reduce()`, etc. 3. DOM manipulation: `createElement`, `appendChild`, `removeChild`, etc. 4. Regular expressions: Using the `/regex/` syntax or `new RegExp()` constructor. MeasureThat.net provides a simple and convenient way to benchmark specific JavaScript features, making it an excellent resource for comparing performance across different browsers and devices.
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