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indexOf -- greaterThan vs equals
(version: 0)
Comparing performance of:
greaterThan vs equals
Created:
9 years ago
by:
Guest
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Tests:
greaterThan
if('test123'.indexOf('123') != -1) {var t = true;} else {var t = false} if('test123'.indexOf('asd') != -1) {var t = true;} else {var t = false}
equals
if('test123'.indexOf('123') > -1) {var t = true;} else {var t = false} if('test123'.indexOf('asd') > -1) {var t = true;} else {var t = false}
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Suite status:
<idle, ready to run>
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Test case name
Result
greaterThan
equals
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Overview** The benchmark is comparing two approaches to check if a substring exists in a string: 1. `indexOf('substring') != -1` 2. `indexOf('substring') > -1` Both approaches are used to assign a boolean value (`true` or `false`) to the variable `t`. **Comparison of Options** The main difference between these two approaches is how they handle the case where the substring is not found. * **`indexOf('substring') != -1`**: This approach returns `true` if the substring is found at any position in the string, and `false` otherwise. The `!= -1` part checks for the presence of the substring, but it doesn't provide any information about its position. * **`indexOf('substring') > -1`**: This approach also returns `true` if the substring is found, but it only returns a positive value (a number greater than `-1`) indicating the position of the substring in the string. **Pros and Cons** * **`indexOf('substring') != -1`**: + Pros: Simple and easy to understand. It's also less computationally expensive since it doesn't require finding the actual position of the substring. + Cons: Returns `true` for any substring, regardless of its length or presence. This can lead to unexpected behavior in certain situations. * **`indexOf('substring') > -1`**: + Pros: Provides a more informative result about the position of the substring, which can be useful in some cases. + Cons: Requires additional computation to find the position of the substring, making it slightly slower than the first approach. **Library and Special JS Features** There is no specific library being used in this benchmark. However, `indexOf()` is a built-in JavaScript method that's supported by most browsers. No special JavaScript features or syntax are being tested in this benchmark. **Alternatives** Other alternatives for checking if a substring exists in a string could include: * Using the `includes()` method (introduced in ECMAScript 2015), which returns a boolean value indicating whether the substring is present in the string. * Using a regular expression with the `test()` method, which also returns a boolean value indicating whether the substring matches the pattern. However, these alternatives are not being tested in this specific benchmark.
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