Create a custom validtor which only accepts the string start with '123'; function skuValidator(control){ if(!control.value.match(/^123/)){ return {invalidSku: true}; } } If it not start with 123, then return the object {invalidSku: true}, which later…

updatePassenger(passenger: Passenger): Observable<Passenger> { let headers = new Headers({ 'Content-Type': 'application/json' }); let options = new RequestOptions({ headers: headers }); return this.http .put(`${PASSENGER_API}/${passenger.id}`, passe…

Creating custom validators is easy, just create a class inject AbstractControl. Here is the form we want to validate it: form = this.fb.group({ store: this.fb.group({ branch: ['', [Validators.required, StockValidators.checkBranch]], code: ['', Valida…

By default the response body doesn’t contain all the data that might be needed in your app. Your server might return some special header which you have to read explicitly. In such case we can use the { observe: ‘response’} configuration of the Angula…

In a previous lesson we learned about implementing a custom preloading strategy. That gives you a lot of control over which route to preload and which not, whether it is based on the user's permissions or some runtime app config. In this lesson we're…

Angular 2 已经正式 Release 了,Thoughtram 已经发布了一系列的文档,对 Angular 2 的各个方面进行深入的阐释和说明. 我计划逐渐将这个系列翻译出来,以便对大家学习 Angular 2 提供一些方便. Getting Started Building a Zippy component in Angular 2 Developing a Tabs component in Angular 2 Angular 2 Template Syntax demystifi…

这篇文章的全局观和思路一级棒! The Fairy Tale Cast your mind back to 2010 when users started to demand interactive web applications. Back then the only real solution was jQuery, and I’d love to know how many of us have sat debugging 1000+ lines of jQuery at some po…

Ionic Framework Ionic framework is the youngest in our top 5 stack, as the alpha was released in late November 2013. Built on top of the popular AngularJS framework from Google, Ionic utilizes AngularJS to provide the application structure, while Ion…

angular 自定义web组件: 首先创建一个名为myCustom的组件. 引入app.module: ... import {customComponent} from ' ./myCustom.component'; @NgModule({ declarations:[AppComponent,customComponent], entryComponents:[customComponent] .... }) export class AppModule{} 全局注册: app.comp…

Each component has its own ChangeDetectorRef, and we can inject ChangeDetectorRef into constructor: export class ChildComponent implements OnInit { constructor( private cdr: ChangeDetectorRef ) For example if you have a huge list can be updated in re…