object = { test: 1 }
proxy = new Proxy(object, {})
proxyWithHandler = new Proxy(object, {
set(target, prop, value) {
target[prop] = value
}
})
object.test = 1
proxy.test = 1
proxyWithHandler.test = 1
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Object | |
Proxy | |
Proxy setter |
Test name | Executions per second |
---|---|
Object | 132010928.0 Ops/sec |
Proxy | 3546160.2 Ops/sec |
Proxy setter | 2862883.0 Ops/sec |
Let's dive into the world of JavaScript microbenchmarks and explore what's being tested in this benchmark.
Benchmark Overview
The provided JSON represents a benchmark test that compares the performance of three different approaches: objects, proxies, and proxy setters. The benchmark is designed to measure the execution time of assigning a value to a property on these three entities.
Options Compared
test
is used as a baseline.set
handler that modifies the value assigned to the property instead of just updating the target object's own property.Pros and Cons
Library and Purpose
In this benchmark, the Proxy
constructor is used to create a proxy object. The purpose of creating a proxy is to measure its performance compared to other approaches. In JavaScript, proxies allow you to intercept and manipulate property access, making them useful for implementing complex logic or adding additional functionality to existing objects.
Special JS Feature/Syntax
In this benchmark, the Proxy
constructor and its associated methods (e.g., set
) are used, which introduces some special features of JavaScript. The Proxy
constructor is a built-in function that creates a new proxy object based on an existing target object and a handler object. This allows you to customize how property access and modification are handled.
Alternatives
Other alternatives for this benchmark could include:
localStorage
) instead of objects or proxies. However, this approach would depend on the specific requirements and constraints of the project.Best Practices
When working with JavaScript benchmarks like this one, consider the following best practices:
By understanding what's being tested in this benchmark, you can better appreciate the importance of optimizing code performance, especially when dealing with common operations like property assignment.