var a = 10;
a.toString();
var a = 10 + "";
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Explicit | |
Implicit |
Test name | Executions per second |
---|---|
Explicit | 130211208.0 Ops/sec |
Implicit | 236800672.0 Ops/sec |
Let's break down the provided benchmark definition and test cases.
Benchmark Definition
The provided JSON represents a JavaScript microbenchmark that compares the performance of implicit and explicit string conversion in JavaScript. The benchmark is designed to measure how fast the browser can execute a certain code snippet, which involves converting an integer value to a string using two different approaches: explicit toString()
method call or implicit string concatenation.
Options being compared
The two options being compared are:
.toString()
: This approach uses the toString()
method explicitly to convert the integer value to a string.""
)) is concatenated with the integer value using the +
operator, effectively converting the integer to a string.Pros and Cons of each approach
.toString()
:Library usage
There is no explicit library mentioned in the benchmark definition or test cases. However, it's worth noting that both approaches are part of the standard JavaScript language and don't require any external libraries.
Special JS feature or syntax
The benchmark uses a feature of modern JavaScript: template literals (introduced in ECMAScript 2015). Although not explicitly mentioned, this is implied by the use of single quotes ('...'
) in the Benchmark Definition
JSON. Template literals provide a concise way to embed expressions inside string literals.
Other alternatives
For measuring performance and benchmarking JavaScript code, you might consider using:
Keep in mind that each of these alternatives has its own strengths and weaknesses, and MeasureThat.net might be suitable for a specific use case or audience.