import { Component, OnInit } from '@angular/core';
import { HTTP_PROVIDERS } from '@angular/http';
import { TimeService } from './time.service';
@Component({
selector: 'my-app',
template:`
<h1>{{title}}</h1>
<p>Current time: {{currentTime}}</p>
<p>Refresh interval in milliseconds</p>
<input [(ngModel)]="refreshInterval" id="refreshInterval" type="text" />
<p>Refresh interval is now set to {{refreshInterval}}</p>
`,
providers: [HTTP_PROVIDERS, TimeService]
})
export class AppComponent implements OnInit {
title = 'Observable Interval - Changing interval';
currentTime: any;
refreshInterval: number = 1000;
constructor(private timeService: TimeService) {}
// with this implementation changing the refreshInterval won't have any affect.
getTime() {
this.timeService.getTime(this.refreshInterval)
.subscribe(t => {
this.currentTime = t;
console.log('Refresh interval is: ' + this.refreshInterval);
}
);
}
ngOnInit() {
this.getTime();
}
}
import { bootstrap } from '@angular/platform-browser-dynamic';
import { AppComponent } from './app.component';
bootstrap(AppComponent);
/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
/* Master Styles */
h1 {
color: #369;
font-family: Arial, Helvetica, sans-serif;
font-size: 150%;
}
h2, h3 {
color: #444;
font-family: Arial, Helvetica, sans-serif;
font-weight: lighter;
}
p {font-size: 83%;}
body {
margin: 2em;
}
html {
font-family: Arial, Helvetica, sans-serif;
}
/*
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
<!DOCTYPE html>
<html>
<head>
<title>Angular 2 Tour of Heroes</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<!-- Polyfill(s) for older browsers -->
<script src="https://npmcdn.com/es6-shim@0.35.0/es6-shim.min.js"></script>
<script src="https://npmcdn.com/zone.js@0.6.12?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>
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
<body>
<my-app>Loading...</my-app>
</body>
</html>
<!--
Copyright 2016 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
-->
/**
* PLUNKER VERSION (based on systemjs.config.js in angular.io)
* System configuration for Angular 2 samples
* Adjust as necessary for your application needs.
*/
(function(global) {
var ngVer = '@2.0.0-rc.1'; // lock in the angular package version; do not let it float to current!
//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
'angular2-in-memory-web-api': 'https://npmcdn.com/angular2-in-memory-web-api', // get latest
'rxjs': 'https://npmcdn.com/rxjs@5.0.0-beta.6',
'ts': 'https://npmcdn.com/plugin-typescript@4.0.10/lib/plugin.js',
'typescript': 'https://npmcdn.com/typescript@1.8.10/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' },
'angular2-in-memory-web-api': { defaultExtension: 'js' },
};
var ngPackageNames = [
'common',
'compiler',
'core',
'http',
'platform-browser',
'platform-browser-dynamic',
'router',
'router-deprecated',
'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: pkgName + '.umd.js', defaultExtension: 'js' };
// Individual files (~300 requests):
//packages['@angular/'+pkgName] = { 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 Google Inc. All Rights Reserved.
Use of this source code is governed by an MIT-style license that
can be found in the LICENSE file at http://angular.io/license
*/
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"sourceMap": true,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": true,
"suppressImplicitAnyIndexErrors": true
},
"exclude": [
"node_modules",
"typings/main",
"typings/main.d.ts"
]
}
import {Injectable} from '@angular/core';
import {Http, Response} from '@angular/http';
import {Observable} from 'rxjs/Rx';
import {IntervalObservable} from 'rxjs/Observable/IntervalObservable';
@Injectable()
export class TimeService {
currentTime: any;
getTime(refreshInterval: number) {
return Observable.interval(refreshInterval)
.startWith(0)
.map((res: any) => this.getDate())
.catch(this.handleError)
}
getDate() {
let d = new Date();
return d.toString();
}
}