Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
String vs ''
(version: 0)
Comparing performance of:
String vs ""
Created:
2 years ago
by:
Guest
Jump to the latest result
Tests:
String
const a = 1; const b = String(a);
""
const a = 1; const b = "" + a;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
String
""
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 JSON** The benchmark definition is quite simple, with only two test cases: * `const a = 1; const b = String(a);`: This test case creates a constant `a` with value `1`, then creates another constant `b` by converting `a` to a string using the `String()` function. * `const a = 1; const b = "" + a;`: This test case creates a constant `a` with value `1`, then creates another constant `b` by concatenating an empty string (`""`) with `a`. **Options Compared** In this benchmark, two approaches are being compared: 1. **Using the `String()` function**: This approach uses the `String()` function to explicitly convert the number `1` to a string. 2. **Using the concatenation operator (`+`) with an empty string**: This approach uses the concatenation operator (`+`) to concatenate the empty string (`""`) with the number `1`. **Pros and Cons of Each Approach** **Using the `String()` function:** Pros: * Clear intent: The code explicitly shows that the intention is to convert a value to a string. * No ambiguity: There's no risk of misunderstanding the type conversion. Cons: * Overhead: Converting a primitive value like `1` to a string using `String()` might incur some overhead, depending on the JavaScript engine and version. **Using the concatenation operator (`+`) with an empty string:** Pros: * Efficient: Concatenating strings is generally more efficient than converting numbers to strings. * Readability: Some developers find this approach more readable, as it's a common way to concatenate strings in many programming languages. Cons: * Ambiguity: There's a risk that the reader might not understand that an empty string is being concatenated with the number `1`, leading to potential type conversion issues. **Library Used** In the first test case (`String()`), no library is explicitly used. However, it's worth noting that some JavaScript engines (like V8) have optimized `String()` function calls for performance benefits. **Special JS Feature/Syntax** None of the provided benchmark definitions use any special JavaScript features or syntax. **Other Alternatives** If you want to explore other approaches, here are a few alternatives: * Using template literals (`${a}`): This approach uses template literals to embed expressions inside strings. While it's a modern feature, it might not be supported in older browsers. * Using `String.fromCharCode()`: This approach converts the number `1` to a string using the `String.fromCharCode()` function, which returns a string representing a character. Keep in mind that these alternatives might have their own set of pros and cons, and might not change the outcome of this specific benchmark.
Related benchmarks:
char index vs charAt() for the first character
string.charCodeAt(index) vs string[index].charCodeAt()
replace vs. slice
charCodeAt vs [] comparison
string.at(-1) vs string[string.length-1]
Comments
Confirm delete:
Do you really want to delete benchmark?