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regex test vs trim
(version: 0)
Comparing performance of:
regex test vs trim
Created:
5 years ago
by:
Guest
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HTML Preparation code:
dlkfjlkd dklfldjf sdlklkdjf ldkjfljdf lll
Tests:
regex test
/^\s+$/.test(document.body.innerText)
trim
document.body.innerText.trim()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
regex test
trim
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what's being tested, compared, and the pros/cons of each approach. **Benchmark Overview** The benchmark measures the performance difference between two approaches: using a regular expression to trim whitespace from an HTML string (`regex test`) versus using the `trim()` method (a built-in JavaScript function). **Options Compared** Two options are being compared: 1. **Regex Test**: This option uses a regular expression (`/^\\s+$/.test(document.body.innerText)`) to check if the HTML string contains only whitespace characters at the beginning and end. 2. **Trim**: This option uses the `trim()` method on the `document.body.innerText` string. **Pros and Cons of Each Approach** 1. **Regex Test**: * Pros: + More flexible, as it can handle different types of whitespace (e.g., tabs, newline characters). + Can be used for more complex trimming tasks. * Cons: + Performance overhead due to the use of a regular expression engine. + May be slower than `trim()` for simple trimming cases. 2. **Trim**: * Pros: + Faster execution, as it's a built-in JavaScript function optimized for performance. + Simple and efficient implementation. * Cons: + Limited flexibility, as it only removes whitespace characters from the beginning and end of the string. **Library Used** In this benchmark, the `document` object is used, which is a part of the Web Content Accessibility Guidelines (WCAG) API. The `document.body.innerText` property returns the text content of the HTML document's body element. **Special JavaScript Feature or Syntax** The regular expression `/^\\s+$/.test(document.body.innerText)` uses a few special features: * `\s`: Matches any whitespace character (including spaces, tabs, newline characters). * `^`: Matches the start of the string. * `$`: Matches the end of the string. These features allow the regular expression to check for whitespace at the beginning and end of the string.
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