Benchmark: indexOf -- greaterThan vs equals

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}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
greaterThan
equals

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

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.

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.59 Safari/537.36

Browser/OS: Chrome 54 on Windows

View result in a separate tab

Test name	Executions per second
greaterThan	8522312.0 Ops/sec
equals	8408924.0 Ops/sec

Related benchmarks:

indexOf -- greaterThan vs equals (version: 0)

Comparing performance of: greaterThan vs equals

Created: 8 years ago by: Guest

Jump to the latest result

greaterThan

equals

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):