Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Regex removing first whitespace vs trim
(version: 0)
testing removing beginning and end whitespace vs trim
Comparing performance of:
regex vs trim
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var string = ' fsajdf asdfjosa fjoiawejf oawjfoei jaosdjfsdjfo sfjos 2324234 sdf safjao j o sdlfks dflks l '
Tests:
regex
string.replace(/^ */g, '')
trim
string.trim()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
regex
trim
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser/OS:
Chrome 129 on Windows
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=560725" width="100%" height="500px"></iframe>
trim
27.7M/s
regex
17.9M/s
View exact numbers
Test name
Executions per second
✓
trim
27,706,838 Ops/sec
regex
17,915,904 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON data and explain what's being tested. **Benchmark Overview** The benchmark is designed to compare two approaches for removing whitespace from a string: 1. **Regular Expression (Regex)**: Using the `string.replace()` method with a regular expression pattern that matches one or more whitespace characters (`^ */g`) and replaces them with an empty string. 2. **Trim**: Using the `string.trim()` method, which removes leading and trailing whitespace by default. **Options Compared** The benchmark is comparing two options: * Option 1: Regex (using `string.replace()`) * Option 2: Trim (using `string.trim()`) **Pros and Cons of Each Approach** **Regex** Pros: * Highly customizable: allows for fine-grained control over whitespace removal * Can be used to remove other types of characters or patterns Cons: * Performance overhead due to regular expression parsing and execution * May have security risks if not used carefully (e.g., using unescaped special characters) **Trim** Pros: * Fast and efficient: `trim()` is a built-in method optimized for performance * Simple and easy to use Cons: * Limited customization options: only removes leading and trailing whitespace by default **Library Usage** There is no library mentioned in the provided JSON data. However, it's worth noting that if the benchmark used a library like jQuery or another DOM manipulation library, it might have introduced additional dependencies or performance overhead. **Special JavaScript Features/Syntax** There are no special JavaScript features or syntax mentioned in the provided data. **Other Alternatives** If you wanted to compare other approaches for removing whitespace from a string, some alternatives could include: * Using a custom implementation of `trim()` that allows for more customization options * Using a regex alternative like `string.slice()` with a fixed length (e.g., `string.slice(1, -1)`) * Using a different library or framework-specific method (if applicable) * Using a testing framework's built-in string manipulation functions Keep in mind that the benchmark results provided are specific to the Chrome browser and may not generalize well to other browsers or platforms.
Related benchmarks
Regex detecting whitespace vs trim
Comments
Confirm delete:
Do you really want to delete benchmark?