var string = "This is a moderately-sized string that ends with Hello World!";
string.includes("World");
string.endsWith("World") || string.endsWith("World!");
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
String.includes | |
Multiple String.endsWith |
Test name | Executions per second |
---|---|
String.includes | 15792320.0 Ops/sec |
Multiple String.endsWith | 6630187.0 Ops/sec |
Let's dive into the explanation of the provided benchmark.
Benchmark Definition
The provided benchmark definition is a JSON object that describes the test case. It has three main sections:
string
with a moderately-sized string that ends with "Hello World!".Individual Test Cases
The benchmark has two individual test cases:
includes()
method on the string
variable.string
variable ends with "World" or "World!" using multiple calls to the endsWith()
method.Comparison Options
The benchmark compares two different approaches:
includes()
call: Tests the performance of a single call to includes()
on the entire string.endsWith()
checks: Tests the performance of checking if the string ends with "World" or "World!" using multiple calls to endsWith()
.Pros and Cons
includes()
call:endsWith()
checks:Other Considerations
When choosing between these approaches, consider the following factors:
endsWith()
checks.JavaScript Features and Syntax
The benchmark uses standard JavaScript features:
includes()
method (introduced in ECMAScript 2015).endsWith()
method (not a standard method, but implemented by modern browsers).No special JavaScript features or syntax are used beyond these standard methods.