Description

JavaScript objects have methods.

Syntax

Objects can also have methods

let robot = {};
robot.speak = function(name) {
    console.log(`${name} is alive!`)
}
 
robot.speak("Johnny 5")

Of course methods can use object properties and functions can be passed as properties

let robot = {name: "Johnny 5", speak};
function speak(state) {
    console.log(`${this.name} is ${state}!`)
}
 
robot.speak("alive")

this parameter can also be passed explicitly using a functions call method, if that’s socially acceptable in your culture:

let robot = {name: "Johnny 5"};
 
function speak(state) {
    console.log(`${this.name} is ${state}!`)
}
 
speak.call(robot, "alive")