Benchmark: === vs reges - MeasureThat.net

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Tests:

regex
/^https?:\/\//.test('asdasd')
===
'123123123123' === 's3'

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regex
===

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
regex	63583776.0 Ops/sec
===	169653728.0 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 10 months ago):

LLMs can make mistakes. Check important info.

This benchmark evaluates two different approaches to string comparison within JavaScript: using a regular expression (regex) and using the strict equality operator (`===`).

### Test Cases Overview

1. **Regex Comparison**:
   - **Benchmark Definition**: `/^https?:\\/\\//.test('asdasd')`
   - **Test Name**: `regex`
   - **Explanation**: This test case uses a regular expression to check if a given string (`'asdasd'`) matches a specific pattern: it tests whether the string begins with "http://" or "https://". The `^` asserts the start of the string, while `https?` indicates that the "s" may or may not be present. 
   - **Purpose**: The regex object and its `.test` method are used for pattern matching in strings, allowing for complex string validation and extraction.

2. **Strict Equality Comparison**:
   - **Benchmark Definition**: `'123123123123' === 's3'`
   - **Test Name**: `===`
   - **Explanation**: This test case compares two strings using the strict equality operator (`===`). In this case, the two strings being compared are `'123123123123'` and `'s3'`.
   - **Purpose**: The `===` operator checks for both value equality and type equality, ensuring that the operands are of the same type and have the same value.

### Pros and Cons of Each Approach

#### Regex Comparison

- **Pros**:
  - Regex allows for complex string pattern matching which can test for various conditions and formats (like URL checking).
  - It can be more succinct for certain patterns compared to writing custom validation logic.

- **Cons**:
  - Regex can be less readable, especially for those who are not familiar with its syntax or for complex patterns.
  - Performance may be slower for extensive pattern matching operations, especially if overused in situations where simpler methods could suffice.

#### Strict Equality Comparison

- **Pros**:
  - The `===` operator is simple, fast, and easy to understand. It directly verifies if two values are equal without any conversion, making it more predictable.
  - Performance for strict comparisons generally remains very high, as it is a basic operation in JavaScript.

- **Cons**:
  - It is limited to direct value comparison and cannot handle more complex string format validations like regex can.

### Other Considerations

- **Performance**: According to the benchmark results, the strict equality operator (`===`) achieves **169,653,728 executions per second**, significantly outperforming the regex approach, which achieves **63,583,776 executions per second**. This indicates that for straightforward string comparisons, using `===` is far more efficient.

- **Alternatives**: Depending on the use case, other string comparison methods may include:
  - The loose equality operator (`==`), which can lead to unexpected results due to type coercion.
  - Using custom functions or libraries that offer string utility methods (like Lodash or Ramda) for more complex string operations.
  - Utilizing additional string methods like `.includes()` or `.startsWith()` for specific checks that may be more performant than regex.

In summary, the benchmark compares two fundamental methods of string comparison in JavaScript, with the strong victory of strict equality (`===`) in terms of performance. Each method has its use case, and developers should choose based on the specific requirements of their application.

Related benchmarks:

=== vs reges (version: 1)

Comparing performance of: regex vs ===

Created: 10 months ago by: Guest

Jump to the latest result

regex

===

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 10 months ago):