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November 19, 2018 22:51
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this is a nice example of using class syntax in js, also passing in an element that is created outside of a class (ul)
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Document</title> | |
| <script defer src="script.js"></script> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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| // we want to uses classes to represent elements on a page | |
| // create a shelf class that creates a ul and | |
| // attaches itself to an element of your choice on | |
| // the page (this could be body element or a div with an id) | |
| // create a book class that creates a book element (li tag) with a title | |
| // create an addBook method to the shelf class that | |
| // takes a book class and adds it as a child to the ul | |
| // create several books for the bookshelf | |
| class Shelf { | |
| constructor() { | |
| } | |
| static createUl() { | |
| const ul = document.createElement("ul") | |
| return document.body.appendChild(ul) | |
| } | |
| } | |
| const ul = Shelf.createUl() | |
| class Book { | |
| constructor(title) { | |
| this.title = title | |
| } | |
| createLi() { | |
| const li = document.createElement('li') | |
| li.innerText = this.title | |
| ul.appendChild(li) | |
| } | |
| } | |
| harryPotter = new Book("harry potter") | |
| readyPlayerOne = new Book("ready player one") | |
| harryPotter.createLi() | |
| readyPlayerOne.createLi() |
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