Created
May 23, 2020 10:20
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| // an absctract representation | |
| class Person { | |
| constructor(name,email) { | |
| this.name = name | |
| this.email = email | |
| } | |
| // things a person can do (functions/methods within a class) | |
| sayName() return `My name is ${this.name}`; | |
| emailAddress() return this.email; | |
| } | |
| const person = new Person('Tony','[email protected]') | |
| person.sayName() // Tony | |
| person.emailAddress() // [email protected] | |
| // or a mathematical representation | |
| class Rectangle { | |
| constructor(height, width) { | |
| this.height = height | |
| this.width = width | |
| } | |
| // things you can do to a rectangle | |
| getPerimeter() return this.height + this.height + this.width + this.width; | |
| getArea() return this.height * this.width; | |
| } | |
| const rect1 = new Rectangle(30, 30); | |
| console.log(rect1.getPerimeter()); // 120 | |
| console.log(rect1.getArea()); // 900 | |
| // more complex | |
| const rectangles = [{h:30,w:30},{h:45,w:30},{h:30,w:366}] | |
| let instancesOfRectangleClass = [] | |
| rectangles.forEach((rectangle) => instancesOfRectangleClass.push(new Rectangle(rectangle.h, rectangle.w))); | |
| instancesOfRectangleClass.forEach(r => console.log(r.getArea())) | |
| // result | |
| // 900 | |
| // 1350 | |
| // 10980 |
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