Ryan KesPGP keyI build stuffEmailGithubTwitterLast.fmMastodonMatrixJavaScript Prototypes
Description
A prototype can be seen as an object another object extends.
Syntax
let protoRabbit = {
speak(line) {
console.log(`The ${this.type} rabbit says '${line}'`) // : The killer rabbit says 'SKREEEE!'
},
}
let killerRabbit = Object.create(protoRabbit)
killerRabbit.type = "killer"
killerRabbit.speak("SKREEEE!")Object.prototype
Most objects in JavaScript eventually extend Object.prototype through
parent prototype objects or directly, which provides a bunch of default
methods1.
console.log(Object.getPrototypeOf({}) == Object.prototype) // true
console.log(Object.getPrototypeOf(Object.prototype)) // null