Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
str.match vs str.split vs deconstruction
(version: 0)
Test String.match with regex against String.split with string and string deconstruction. We are splitting a string at the spaces.
Comparing performance of:
String.split vs Regex.match vs Deconstruction
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
string = 'This is a benchmark to test if matching a regex is faster that splitting a string'; regex = /./gi;
Tests:
String.split
const result = string.split('');
Regex.match
const result = string.match(regex);
Deconstruction
const result = [...string];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
String.split
Regex.match
Deconstruction
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Browser/OS:
Chrome 120 on Windows
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=488030" width="100%" height="500px"></iframe>
String.split
4.8M/s
Deconstruction
416K/s
Regex.match
366K/s
View exact numbers
Test name
Executions per second
✓
String.split
4,785,910 Ops/sec
Deconstruction
416,354 Ops/sec
Regex.match
365,508 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided benchmark is designed to compare the performance of three different approaches for string manipulation in JavaScript: 1. `String.split()` 2. Regular expression matching (`String.match()` with a regex pattern) 3. Deconstruction (using the spread operator `...`) The benchmark aims to measure which approach is faster when splitting a string into an array. **Approach Comparison** ### 1. `String.split()`: * This method splits a string into an array of substrings, using a specified separator (in this case, an empty string `''`). The resulting array contains the individual words or tokens from the original string. * **Pros**: Simple and straightforward to implement. It's also a widely supported method in JavaScript. * **Cons**: Can be slower than other methods when dealing with large strings or complex separators. ### 2. Regular Expression Matching (`String.match()`): * This method uses a regex pattern to search for a match in the string and returns an array containing the matched text(s) if found, or `null` otherwise. * **Pros**: Can be faster than `String.split()` when dealing with regular expressions, especially for complex patterns. It also provides additional features like capturing groups and flags (e.g., global, multiline). * **Cons**: Requires a regex pattern to be defined, which can add complexity and overhead. Also, it may not always produce the desired results if the pattern is too specific. ### 3. Deconstruction (`...`): * This method uses the spread operator `...` to create an array from the elements of an iterable object (in this case, a string). It's similar to `String.split()` but can be more efficient for large strings. * **Pros**: Can be faster than `String.split()` and regular expression matching. It also provides a concise way to split a string into an array. * **Cons**: Not as widely supported as other methods in older JavaScript versions (prior to ECMAScript 2015). May not work as expected if the string contains null or undefined characters. **Library: None** The benchmark does not use any external libraries. The `String.match()` method uses the built-in RegExp object, while `String.split()` and deconstruction use the native String and Array types, respectively. **Special JS Feature/Syntax: None** There are no special JavaScript features or syntax used in this benchmark that require explanation. **Alternative Approaches** Other alternatives to compare could be: * Using a different separator (e.g., comma `,`, semicolon `;`) with `String.split()`. * Using a regex pattern with capturing groups and flags (`String.match()`). * Using a library like Lodash or Ramda for string manipulation. * Comparing the performance of other splitting methods, such as using `Array.prototype.reduce()` or `Array.prototype.forEach()`. However, these alternatives would require additional setup and modifications to the benchmark code to ensure accurate results.
Related benchmarks
str.match vs str.Split
str.match vs str.Split(regex)
Comments
Confirm delete:
Do you really want to delete benchmark?