import { Component } from '@angular/core';
@Component({
selector: 'my-app',
templateUrl: 'app/app.component.html'
})
export class AppComponent {
counterValue = 5;
}
/*
Copyright 2016 thoughtram GmbH. All Rights Reserved.
Use of this source code is governed by an TTML-style license that
can be found in the license.txt file at http://thoughtram.io/license.txt
*/
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app.module';
platformBrowserDynamic().bootstrapModule(AppModule);
/*
Copyright 2016 thoughtram GmbH. All Rights Reserved.
Use of this source code is governed by an TTML-style license that
can be found in the license.txt file at http://thoughtram.io/license.txt
*/
<!DOCTYPE html>
<html>
<head>
<title>Angular 2 Demo: Custom two-way data binding by thoughtram</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 1. Load libraries -->
<!-- Polyfill(s) for older browsers -->
<script src="https://npmcdn.com/core-js/client/shim.min.js"></script>
<script src="https://npmcdn.com/zone.js@0.6.23?main=browser"></script>
<script src="https://npmcdn.com/reflect-metadata@0.1.3"></script>
<script src="https://npmcdn.com/systemjs@0.19.27/dist/system.src.js"></script>
<!-- 2. Configure SystemJS -->
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
<script>document.write('<base href="' + document.location + '" />');</script>
</head>
<!-- 3. Display the application -->
<body>
<my-app>Loading...</my-app>
</body>
</html>
(function(global) {
var ngVer = '@2.0.0'; // lock in the angular package version; do not let it float to current!
var routerVer = '@3.0.0'; // lock router version
var formsVer = '@2.0.0'; // lock forms version
//map tells the System loader where to look for things
var map = {
'app': 'app',
'@angular': 'https://npmcdn.com/@angular', // sufficient if we didn't pin the version
'@angular/router': 'https://npmcdn.com/@angular/router' + routerVer,
'@angular/forms': 'https://npmcdn.com/@angular/forms' + formsVer,
'rxjs': 'https://npmcdn.com/rxjs@5.0.0-beta.11',
'ts': 'https://npmcdn.com/plugin-typescript@4.0.10/lib/plugin.js',
'typescript': 'https://npmcdn.com/typescript@1.9.0-dev.20160409/lib/typescript.js',
};
//packages tells the System loader how to load when no filename and/or no extension
var packages = {
'app': { main: 'main.ts', defaultExtension: 'ts' },
'rxjs': { defaultExtension: 'js' },
};
var ngPackageNames = [
'common',
'compiler',
'core',
'http',
'platform-browser',
'platform-browser-dynamic',
'upgrade',
];
// Add map entries for each angular package
// only because we're pinning the version with `ngVer`.
ngPackageNames.forEach(function(pkgName) {
map['@angular/'+pkgName] = 'https://npmcdn.com/@angular/' + pkgName + ngVer;
});
// Add package entries for angular packages
ngPackageNames.forEach(function(pkgName) {
// Bundled (~40 requests):
packages['@angular/'+pkgName] = { main: '/bundles/' + pkgName + '.umd.js', defaultExtension: 'js' };
// Individual files (~300 requests):
//packages['@angular/'+pkgName] = { main: 'index.js', defaultExtension: 'js' };
});
// No umd for router yet
packages['@angular/router'] = { main: 'index.js', defaultExtension: 'js' };
// Forms not on rc yet
packages['@angular/forms'] = { main: 'index.js', defaultExtension: 'js' };
var config = {
// DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
transpiler: 'ts',
typescriptOptions: {
tsconfig: true
},
meta: {
'typescript': {
"exports": "ts"
}
},
map: map,
packages: packages
};
System.config(config);
})(this);
/*
Copyright 2016 thoughtram GmbH. All Rights Reserved.
Use of this source code is governed by an TTML-style license that
can be found in the license.txt file at http://thoughtram.io/license.txt
*/
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"suppressImplicitAnyIndexErrors": true
}
}
<h2>Angular 2 demo: Custom two-way data binding</h2>
<p>In this demo we show how to implement a custom two-way data binding using Angular's
property and event binding mechanism.</p>
<hr>
<br>
<custom-counter [(counter)]="counterValue"></custom-counter>
<p><code>counterValue = {{counterValue}}</code></p>
<hr>
<p style="text-align: center;">Brought to you by Team <a href="http://thoughtram.io">thoughtram</a></p>
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { CustomCounterComponent } from './custom-counter.component';
@NgModule({
imports: [BrowserModule],
declarations: [AppComponent, CustomCounterComponent],
bootstrap: [AppComponent]
})
export class AppModule {}
/*
Copyright 2016 thoughtram GmbH. All Rights Reserved.
Use of this source code is governed by an TTML-style license that
can be found in the license.txt file at http://thoughtram.io/license.txt
*/
import { Component, Input, Output, EventEmitter } from '@angular/core';
@Component({
selector: 'custom-counter',
template: `
<button (click)="decrement()">-</button>
<span>{{counter}}</span>
<button (click)="increment()">+</button>
`
})
export class CustomCounterComponent {
counterValue = 0;
@Output() counterChange = new EventEmitter();
@Input()
get counter() {
return this.counterValue;
}
setCallsCounter = 0;
set counter(val) {
if (this.setCallsCounter !== 0) {
alert('Set call number ' + this.setCallsCounter + '. `val` value: ' + val + '.');
}
this.setCallsCounter++;
this.counterValue = val;
this.counterChange.emit(this.counterValue);
}
decrement() {
this.counter--;
}
increment() {
this.counter++;
}
}