Last active
January 10, 2018 18:48
-
-
Save djedi/14ca3a0e0688ceafb8c145ec5d11566d to your computer and use it in GitHub Desktop.
collection observer vs observable, splice, replace
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <template> | |
| <button click.delegate="addData()">Add Data</button> | |
| <button click.delegate="popData()">Pop Data</button> | |
| <button click.delegate="spliceData()">Splice Data</button> | |
| <button click.delegate="replaceData()">Replace Data</button> | |
| <button click.delegate="observeData()">Rewire Observer</button> | |
| <hr> | |
| Data: | |
| <table> | |
| <tr repeat.for="val of data"> | |
| <td>${val}</td> | |
| </tr> | |
| </table> | |
| <hr> | |
| Log: | |
| <ul> | |
| <li repeat.for="entry of log">${entry}</li> | |
| </ul> | |
| </template> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import { BindingEngine, inject, observable } from "aurelia-framework"; | |
| @inject(BindingEngine) | |
| export class App { | |
| @observable data2 = []; | |
| constructor(bindingEngine) { | |
| this.bindingEngine = bindingEngine; | |
| this.data = []; | |
| this.log = []; | |
| } | |
| attached() { | |
| this.observeData(); | |
| } | |
| observeData() { | |
| if (this.subscription) { | |
| this.subscription.dispose(); | |
| } | |
| this.subscription = this.bindingEngine | |
| .collectionObserver(this.data) | |
| .subscribe(splices => { | |
| this.dataChanged(splices); | |
| }); | |
| } | |
| detached() { | |
| if (this.subscription) { | |
| this.subscription.dispose(); | |
| } | |
| } | |
| dataChanged(splices) { | |
| console.debug("dataChanged", splices); | |
| this.log.unshift('data changed ' + new Date()); | |
| } | |
| data2Changed(newVal) { | |
| console.debug("data2Changed", newVal); | |
| this.log.unshift('data2 changed ' + new Date()); | |
| } | |
| addData() { | |
| this.data.push(new Date()); | |
| this.data2.push(new Date()); | |
| } | |
| popData() { | |
| this.data.pop(); | |
| this.data2.pop(); | |
| } | |
| spliceData() { | |
| const rand = Math.floor(Math.random() * this.data.length); | |
| this.data.splice(rand, 1, 'spliced'); | |
| this.data2.splice(rand, 1, 'spliced'); | |
| } | |
| replaceData() { | |
| this.data = ['replaced', 'data', 'completely']; | |
| this.data2 = ['replaced', 'data', 'completely']; | |
| } | |
| } |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Aurelia</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body aurelia-app> | |
| <h1>Loading...</h1> | |
| <script src="https://jdanyow.github.io/rjs-bundle/node_modules/requirejs/require.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/config.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/aurelia.js"></script> | |
| <script src="https://jdanyow.github.io/rjs-bundle/bundles/babel.js"></script> | |
| <script> | |
| require(['aurelia-bootstrapper']); | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment