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cehoffman/app.html

Last active April 23, 2016 12:41
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computedFrom Set
Raw
app.html
<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>
Raw
app.js
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);
}
}
Raw
index.html
<!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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