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Effectively implementing inheritance in JavaScript requires adherence to established guidelines and conventions, guaranteeing optimal outcomes. This article highlights critical best practices, detailing each recommendation alongside concise sample codes.
1. Prefer composition over inheritance
Use composition when possible because it promotes greater flexibility than rigid hierarchical relationships imposed by inheritance. Moreover, composition reduces dependencies, increasing reusability and easing unit testing.
Example:
const Engine = props => ({
start() {
console.log('Engine Started');
},
stop() {
console.log('Engine Stopped');
}
})
const Car = props => ({
...Engine(props),
drive() {
console.log('Car moving');
}
})
const myCar = Car();
myCar.start();
myCar.drive();
myCar.stop();
2. Leverage ES6 class syntax judiciously
While tempting to adopt shiny new ECMAScript features, ensure proper application. Use classes primarily for…