Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
String comparisonwaefawefaewafweafwe
(version: 0)
Comparing performance of:
eerste vs tweede
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var a = "John Doe";
Tests:
eerste
a === 'John Doe'
tweede
'John Doe' === a
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
eerste
tweede
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):
I'd be happy to explain what's being tested in this JavaScript microbenchmark. **What is being tested?** MeasureThat.net is testing two different ways of comparing strings in JavaScript: 1. `a === 'John Doe'` (also known as "string literal comparison") 2. `'John Doe' === a` (also known as "variable before string comparison") These two approaches are often compared because they are commonly used in JavaScript code, but have slightly different performance characteristics. **Options being compared:** The benchmark is comparing the performance of these two approaches: * **String Literal Comparison**: This approach involves comparing a string literal (`'John Doe'`) with a variable `a` that holds the same value as a string. This is how most JavaScript developers would write this comparison. * **Variable Before String Comparison**: This approach involves comparing a variable `a` with a string literal (`'John Doe'`). This is less common, but can be useful in certain situations. **Pros and Cons:** 1. **String Literal Comparison (a === 'John Doe')** * Pros: + Most JavaScript developers are familiar with this approach. + Can be faster because the string literal is a constant and doesn't need to be created or compared. * Cons: + May require more memory allocations when creating the string literals, especially for large strings. 2. **Variable Before String Comparison ('John Doe' === a)** * Pros: + Can be faster because the variable `a` has already been created and doesn't need to be recreated or compared. * Cons: + Less common and may require more code to read, making it less intuitive for some developers. **Other considerations:** When writing JavaScript code, it's generally recommended to use string literals (`'John Doe'`) for comparisons because they are more efficient. However, in certain situations, using a variable before a string literal can be useful or necessary (e.g., when working with dynamic data). **Library used:** There is no library explicitly mentioned in the benchmark definition or test cases. The tests only involve basic JavaScript syntax and no external libraries. **Special JS feature/syntax:** None of the provided test cases use any special JavaScript features or syntax beyond standard JavaScript comparison operators. **Other alternatives:** If you wanted to compare string lengths, equality, or other string operations, MeasureThat.net provides a range of benchmarks that cover various scenarios. Some examples include: * `String.prototype.length` vs `a.length` * `String.prototype.indexOf()` vs `a.indexOf('John Doe')` * `String.prototype.endsWith()` vs `'John Doe'.endsWith(a)` These benchmarks can help you compare the performance of different string operations in JavaScript.
Related benchmarks:
indexof vs equal with equals
Javascript: toLowerCase vs equality ===
Javascript: Case insensitive string comparison performance with indexOf 2
Accessing stuff
Comments
Confirm delete:
Do you really want to delete benchmark?