Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Array vs String conversion check in Array
(version: 0)
Comparing performance of:
String check vs Array check
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var p1=['t1','t2']; var p2=['t1','t2'];
Tests:
String check
var s = p1.toString()==='t1,t2'
Array check
var containsAll = p1.every(i => p2.includes(i));
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
String check
Array check
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Definition** The test consists of two individual test cases: 1. **String Check**: The script checks if the string representation of an array (`p1.toString()`) is equal to the expected string `'t1,t2'`. This test case measures how fast the JavaScript engine can perform a simple string comparison. 2. **Array Check**: The script uses the `every()` method to check if all elements in array `p1` are present in array `p2`. This test case measures how fast the JavaScript engine can iterate through an array and check for membership. **Options Compared** In this benchmark, two options are being compared: * **Array as String**: In the first test case (`String Check`), the array `p1` is converted to a string using the `toString()` method. This approach allows us to compare the string representation of an array with a known expected value. * **Using every() for Array Membership**: In the second test case (`Array Check`), the JavaScript engine uses the `every()` method to check if all elements in `p1` are present in `p2`. This approach involves iterating through each element in `p1` and checking membership in `p2`. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Array as String**: Pros: + Simple to implement + Allows for easy comparison with a known expected value Cons: + Can be slower due to string conversion overhead * **Using every() for Array Membership**: Pros: + More efficient for large arrays since it uses a single iteration and branching Cons: + Requires iterating through each element in the array, which can be slow for small arrays **Library and Syntax** There are no notable libraries or special JavaScript features used in this benchmark. The focus is on measuring the performance of basic operations in vanilla JavaScript. **Other Considerations** When interpreting these results, keep in mind that: * **Browser Differences**: Different browsers may have varying levels of optimization for array membership checks. * **Array Size**: For small arrays, the `every()` method might be slower due to its branching nature. However, for large arrays, this approach can provide significant performance benefits. * **Platform and Hardware**: Platform-specific optimizations or hardware differences can affect execution times. **Alternatives** If you're interested in exploring alternative approaches: * **Array.prototype.every()` with a callback function: Instead of using the `every()` method directly, you could create a custom function that iterates through an array and checks membership. * **Using Map or Set for Array Membership**: Modern browsers support `Map` or `Set` data structures, which can provide efficient membership checks. In conclusion, this benchmark measures the performance of two different approaches: converting an array to a string and using the `every()` method for array membership. Understanding these options can help you optimize your JavaScript code for specific use cases.
Related benchmarks:
Array from vs string split
JSON.parse vs string.split small fixed array
JSON.parse vs string.split 2
JSON.parse vs string.splitds
Comments
Confirm delete:
Do you really want to delete benchmark?