function T(i) {
this.counter = i;
}
T.prototype.myMethod = function() {
if (this.counter == 20000) {
console.log('Hey T!');
}
};
function Tt(i) {
this.counter = i;
this.myMethod = function() {
if (this.counter == 20000) {
console.log('Hey Tt!');
}
};
}
function factoryPattern(i){
var counter = i;
function myMethod() {
if (counter == 20000) {
console.log('Hey Factory!');
}
}
return {
myMethod: myMethod
}
}
for (var i = 1; i <= 100; i++) {
var x = new T(i);
x.myMethod();
}
for (var i = 1; i <= 100; i++) {
var x = new Tt(i);
x.myMethod();
}
for (var i = 1; i <= 100; i++) {
var x = factoryPattern(i);
x.myMethod();
}
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Using this | |
Using prototype | |
Using Factory |
Test name | Executions per second |
---|---|
Using this | 755735.7 Ops/sec |
Using prototype | 471129.1 Ops/sec |
Using Factory | 1067671.2 Ops/sec |
Let's break down the provided benchmark and explain what's being tested, compared, and other considerations.
Benchmark Definition
The benchmark is defined to compare the performance of three JavaScript design patterns: Factory, Constructor, and Prototype.
Options Compared
The benchmark compares the performance (measured in executions per second) and memory consumption of each pattern when creating and calling a method myMethod()
on an object that increments a counter until it reaches 20,000.
Pros and Cons
Library and Purpose
None of the provided benchmark definitions use external libraries. However, it's worth noting that some JavaScript engines or frameworks might provide built-in support for these design patterns.
Special JS Feature/Syntax
The benchmark does not use any special JavaScript features or syntax beyond standard ES6 syntax.
Other Considerations
Alternatives
Other alternatives for measuring JavaScript performance could include:
benchmark
or fast-bench
Keep in mind that each alternative has its strengths and weaknesses, and the choice of which one to use depends on the specific use case and requirements.