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computedFrom Set
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| <template> | |
| <input type="checkbox" change.trigger="updateCheck('second', $event.srcElement.checked)"> | |
| <input type="checkbox" change.trigger="updateCheck('first', $event.srcElement.checked)"> | |
| <div>${anyChecked ? 'Some Checked' : 'None Checked'}</div> | |
| </template> |
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| import {computedFrom} from 'aurelia-framework'; | |
| export class App { | |
| isChecked = new Set() | |
| @computedFrom('isChecked') | |
| get anyChecked() { | |
| console.log('Calculating any Checked', this.isChecked) | |
| return Boolean(this.isChecked.size); | |
| } | |
| updateCheck(prop, state) { | |
| console.log('Updating check state', prop, state); | |
| state ? this.isChecked.add(prop) : this.isChecked.delete(prop); | |
| } | |
| } |
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| <!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://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/jspm_packages/system.js"></script> | |
| <script src="https://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/config.js"></script> | |
| <script> | |
| System.import('aurelia-bootstrapper'); | |
| </script> | |
| </body> | |
| </html> |
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