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Starter files for Class Exercise
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| class Burger { | |
| #isMeatless = false; | |
| #isCooked = false; | |
| toppings = []; | |
| constructor(_isMeatless = false, ...toppings) { | |
| this.#isMeatless = _isMeatless; | |
| this.toppings = toppings; | |
| } | |
| get toppings() { | |
| return [...toppings]; | |
| } | |
| isVeggie() { | |
| return this.#isMeatless; | |
| } | |
| static cookBurger(burger) { | |
| return new Promise((resolve, reject) => { | |
| setTimeout(() => { | |
| burger.#isCooked = true; | |
| console.log('burger is cooked'); | |
| resolve(); | |
| }, 2000); | |
| }); | |
| } | |
| } | |
| export default Burger; | |
| //Example usage of the class. | |
| let b = new Burger(false, 'cheese', 'lettuce', 'tomato', 'onion'); | |
| console.log(b.toppings); | |
| console.log(b.isVeggie()); | |
| Burger.cookBurger(b); |
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| class Fish { | |
| #_color; | |
| #_numFins; | |
| constructor(_color, _numFins = 3) { | |
| this.#_color = _color; | |
| this.#_numFins = _numFins; | |
| } | |
| get color() { | |
| return this.#_color; | |
| } | |
| get numberOfFins() { | |
| return this.#_numFins; | |
| } | |
| swim(_speed) { | |
| if (isNaN(_speed)) throw Error('Speed must be numeric'); | |
| let output = Array(_speed).fill('Swish').join(', '); | |
| console.log(output); | |
| return output; | |
| } | |
| } | |
| export default Fish; | |
| //Example usage of the class | |
| let jaws = new Fish('grey', 3); | |
| console.log(jaws.color); | |
| console.log(jaws.numberOfFins); | |
| jaws.swim(8); |
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| class Person { | |
| #firstName; | |
| #lastName; | |
| constructor(_first, _last) { | |
| this.#firstName = _first; | |
| this.#lastName = _last; | |
| } | |
| get name() { | |
| return `${this.#firstName} ${this.#lastName}`; | |
| } | |
| talk(words, element) { | |
| //element is the elementReference or id of an element | |
| console.log(words); | |
| let ref; | |
| if (typeof element == 'string') { | |
| ref = document.querySelector(element); | |
| } else { | |
| if (typeof HTMLElement != 'undefined' && element instanceof HTMLElement) { | |
| ref = element; | |
| } | |
| } | |
| if (ref) ref.textContent = words; | |
| } | |
| } | |
| export default Person; | |
| //Example usage of class | |
| let bob = new Person('Bobby', 'Singer'); | |
| console.log(bob.name); | |
| bob.talk(`Hello my name is ${bob.name}.`); |
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| class Robot { | |
| #_color; | |
| #isShiny = false; | |
| purpose = ''; | |
| constructor(_color, _isShiny, _purpose) { | |
| this.#_color = _color; | |
| this.#isShiny = _isShiny; | |
| this.purpose = _purpose; | |
| } | |
| get color() { | |
| let str = `The robot is ${this.#_color}`; | |
| str += this.#isShiny ? ' and shiny.' : ' but not shiny.'; | |
| return str; | |
| } | |
| talk(element) { | |
| //element is the elementReference or id of an element | |
| console.log('Beep'); | |
| let ref; | |
| if (typeof element == 'string') { | |
| ref = document.querySelector(element); | |
| } else if (typeof HTMLElement != 'undefined' && element instanceof HTMLElement) { | |
| ref = element; | |
| } else { | |
| console.log('Beep'); | |
| } | |
| if (ref) ref.textContent = 'Beep'; | |
| } | |
| } | |
| export default Robot; | |
| //Example usage of class | |
| let marvin = new Robot('white', true, 'being depressed'); | |
| console.log(marvin.color); | |
| console.log(marvin.purpose); | |
| marvin.talk(); |
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