Let's dive into the details of this JavaScript microbenchmark.

Benchmark Overview

The benchmark is designed to compare the performance of two string searching methods: indexOf and includes. The script preparation code provides a sample string, and the HTML preparation code is not needed in this case. The goal is to measure which method is faster for a specific substring search ("tempor").

Options Compared

Two options are compared:

1. string.indexOf('tempor')>: This method returns the index of the first occurrence of "tempor" in the string, or -1 if not found.
2. string.includes('tempor'): This method returns a boolean value indicating whether the string includes the specified substring.

Pros and Cons

• indexOf:
  • Pros: Generally faster and more efficient for exact substring searches.
  • Cons: Returns an index, which may be useful in some contexts but can be wasteful if not needed.
• includes:
  • Pros: More concise and expressive, as it returns a boolean value directly. Also, modern browsers have optimized this method to be faster.
  • Cons: May be slower than indexOf for exact substring searches.

Library Usage

None of the provided benchmark code uses any external libraries.

Special JavaScript Feature or Syntax

The benchmark does not use any special JavaScript features or syntax beyond what's standard in ECMAScript 5 (ES5). However, modern browsers have implemented various optimizations and improvements over ES5, such as includes.

Other Alternatives

If you want to explore other string searching methods, here are a few alternatives:

• string.indexOf() with a regular expression: [string.indexOf('tempor', 0)]. This can be slower than the native indexOf method.
• String.prototype.includes() with a custom substring: (string + '').includes('tempor'). While this works, it's less efficient and may introduce unnecessary overhead due to string concatenation.

Keep in mind that these alternatives are not typically recommended for performance-critical code or benchmarking purposes.