learn angular 2

When creating a service, need to inject the sercive into the bootstrap ():Import {bootstrap, Component, View} from "Angular2/angular2""./todoinput"; "./todoservice" ; @Component ({ selector:' app '}) @View ({ directives: [Todoinput], Template: ' '}) class app{}Bootstrap (APP, [Todoservice]) ;Todoservice.jsExport class todoservice{ = []; Addtodo (value:any):void { this. Todos.push (value); }}Inputtodo.js:Import {Component, View} from "Angular2/angular2"; Imp

RxJS allows combine streams in various ways. This lesson shows do you have a click stream and combine it with a store stream to use a value from the store inside a Reducer.The logic is when we click the Recall button, it'll reset all the people's time to the current time.First, bind the click event to recall$:"recall$.next ()">RecallNew Subject ();We get the latest time from the time Stroe:Constructor (store:store) { This. Time = store.Select('Clock'); This. People = store.Select('people'); Obs

Showing how can expose properties on your controllers to access them using #refs inside of your template.// letterselect.ts ' angular2/angular2 '; @Component ({ ' letter-select '}) @View ({ directives: [Ngfor,form _directives], Template: ' for = "#letter of letters" >{{letter}} '}) Export class Letterselect { = [' E ', ' s ', ' W ']; Selectedletter = ' E '; Constructor () { }}Todolist.tsImport {Component, View, Ngfor, form_directives} from ' Angular2/angular2 ';

Angular's core MVVM, here's a look at the MV (data to view).Execute the above code, we use settimeout delay two seconds to update the data (M), our view (V) has not changed.The data actually changed , but our view (V) didn't refresh in time because the native settimeout didn't have the ability to refresh.Angular provides us with a settimeout service, $timeout, the need to introduce the service in AAA!We bind a click event to an element with ID AAA and change the name value to hi when a click occ

({directives: [Form_directives, Ngif], Template: 'Div> H2>Demo Form:skuH2> Ngform is attched to the form, and #f = "form" form was also come from Ngform - form[Ng-form-model]= "MyForm"(Submit)= "OnSubmit (myform.value)"> Divclass= "Form-group"[Class.has-error]= "!sku.valid sku.touched"> label for= "Skuinput">Skulabel> inputtype= "text"class= "Form-control"ID= "Skuinput"placeholder= "SKU"[Ng-form-control]= "myform.controls[' sku ')">

In this lesson, we discuss how and if to use factory providers, to enable dependencies that shouldn ' t is available to an Gular ' s DI.If you have the This service:class Loggerprovider { Constructor (Enabled:boolean) { if(enabled) { Console.log ( " Logger is enabled " ) } }}which requires you provide Param in constructor function.If you just the it like normal provider:@Component ({ 'todos', providers: [Todoservice, Loggerprovider], Template: ' ... ' })It w

While you had multiple streams flowing into your scan operator, you'll need to map each stream to the specific values you Need to update your state the This is the want. This lesson covers using the "map operator to determine" What the "click" and "Interval should do" is updated.Import {Component} from 'Angular2/core'; import {bootstrap} from 'Angular2/platform/browser'; import {Observable} from 'rxjs/observable'; Import'Rxjs/add/observable/interval'; Import'Rxjs/add/observable/merge'; Import'Rx

Off TopicTo solve the blog title, because the first article commented that some people questioned the subject is far away, said half a day and angular material not half-hair relationship. In fact, my center in the second half of the "string Learning client development." Require () Don't confuse the Require () and requirejs here. It is interesting, however, that Typescript's module definition even supports both of these modular mechanism

Ngclass} From "Angular2/angular2",@Component ({ ' Todo-item-render '}) @View ({ directives: [Ngclass ], styles: [' . started{ color:green; } . Completed { text-decoration:line-through; } '], Template: ' [ng-class]= ' Todoinput.status ' >{{ Todoinput.title}} '}) Export class todoitemrender{ @Input () Todoinput:todomodel;}Many components require different styles based on a set of conditions.

Heros.ts:Import {Component} from "@angular/core"; Const Heroes=[{ID:1, Name: ' Superman '}, {ID:2, Name: ' Batman '}, {ID:5, Name: ' Batgirl '}, {ID:3, Name: ' Robin '}, {ID:4, Name: ' Flash '}]; @Component ({selector:' Heroes ', Styleurls: [' Heroes.component.css '], Template: 'ngfor="Let hero of heroes; let i = index; Trackby: Trackby (Hero); Let Iseven=even; Let Isfirst=first; Let Islast=last

Angular Learning (2): Controller definition summary, angularcontroller The above section summarizes the ng-view application, and separates the O M background into two interfaces for logical Controller processing. This article will summarize the knowledge used by the Controller in the project: $ Scope: scope object, which only represents the current Controller object. All objects in this scope are declared

1. Introduction of ANGULAR2 predefined types　　Import {Component,View,Bootstrap} from "Angular2/angular2" ;2. Implement a ANGULAR2 component　　@Component({selector:"Ez-app"})//location rendered to using the CSS selector via the Selector property 　　@View({template:' } ')//view, specify the rendered template through the Templates property 　　Class Ezapp{} 3. Rendering components to the DOMbootstrap(ezapp); The above equivalent,Class Ezapp {}Ezapp.an

Async Pipe:The asynce pipe receive a Promise or Observable as input and subscribes to the input, evetually emitting the value (s) Cha Nges arrive.In the demo, the logic was fom the list component, we ask service to get Heros by calling Start War APIs, on the service SID E, we only return an array of heros with Observalbe type: Getheros () { returnthis. _http. Get('http://swapi.co/api/people') Res.json (). Results) . Catch (this. handleError); class hero{

Http://www.alliedjeep.com/2547.htmAngularJS Code (users.js)var Users = angular.module (' Users ', []);Users.controller (' userlist ', function ($scope, $http) {$scope. start = 0;$scope. showlimit = 10;$scope. Count = 0;/* Default Users List */$http. Get (' welcome/get_users ' + '/' + $scope. Start + '/' + $scope. Showlimit). Success (function (data) {$scope. Users = data;});/* Count Users */$http. Get (' Welcome/count_users '). Success (function (data) {$scope. Count = data;});/* Pagination */$s

Showing How to set up a Pipe, takes multiple updating inputs for multiple Component sources.Import {Component, View, Ngfor, form_directives} from ' Angular2/angular2 '; import {Todoservice} from'./todoservice '; import {Todoitemrender} from'./todoitemrender '; import {StartsWith} from'./startswith '; import {Simplesearch} from'./simplesearch '; import {letterselect} from'./letterselect '; import {Todosearch} from'./todosearch '; @Component ({selector:' Todo-list '}) @View ({pipes: [StartsWith, S

Besides @Input (), we can also use properties on the @Component, to pass the data.Import {Component, View, Ngfor, Input} from ' Angular2/angular2 '; @Component ({selector:' Reddit-article '}) @View ({directives: [], Template: ' `}) Export class Redditarticle {@Input () article:article; Voteup () { This. Article.voteup (); return false; } votedown () { This. Article.votedown (); return false; }}Works the same as:Import {Component, View, Ngfor, Input} from ' Angular2/angular2 '; @Component (

technology trend of * production systems, so as to remain unchanged. "Inside Ole 2" *** tips **: 1) Delphi/BCB/vB can quickly build interfaces, but it is not a good platform to really learn and understand the system, however, if you have time to read the source code of VCL, you can also learn a lot from how Borland encapsulates the system.

what webpage these pediatrics? It is not difficult to see, above his business novice, this idea is undoubtedly built in the castle, you do not build the foundation, where the roof? OK, mastering the production of static Web pages is a prerequisite for learning to develop the site, this is the point here, because this article is not a tutorial article, but also do not have a deep analysis of technology. I assume that you can now complete a static page, of course, do a good looking ugly is anothe

Learn kafka with me (2) and learn kafka Kafka is installed on a linux server in many cases, but we are learning it now, so you can try it on windows first. To learn kafk, you must install kafka first. I will describe how to install kafka in windows. Step 1: Install jdk first. Because kafka depends on the Java environme

I want to learn Python with my colleagues. I want to talk about small functions (2). I want to learn python. The title of the previous lecture and this lecture is "big topic and small functions". The so-called big topic is that if these functions are traced back, they will find things that sound higher. This kind of thinking definitely inherits the fine tradition