angular2 starter

ANGULAR2 has two of the more useful upload files of the third-party library, one is ng2-file-upload , one is ng2-uploader . ng2-uploaderis a lightweight upload file support library, the function is weak, but ng2-file-upload is a feature more comprehensive upload file support library. Here ng2-file-upload is the main introduction of the use.The following are described in the Mac OS operating system.1. InstallationInstall with NPM. To open terminal in t

return an array of routing links. The router will eventually parse the array into a URL and a component view. We can also add a routerlinkactive directive to Appcomponent templates Template: ' 6. Router Status At the end of each navigation lifecycle, the router builds a activatedroute tree that represents the current state of the router. We can access the current Routerstate value in any application using the router service and its routerstate properties. 7.router_directives

The purpose of the angular module is to organize the logical structure of the app. The class used by @ngmodule in Ng is considered to be a NG module. Ngmodule can manage components, directives, pipes within the module, introduce service, and control the access of external components to internal members. ANGULAR2 has the concept of the module, and responds to the call of the backstage program, cohesion well-structured classes the low coupling. Module

component, app.component.ts, is just a container. Import {Component} from ' @angular/core '; @Component ({ selector: ' App-root ', templateurl: './app.component.html ' }) Export class appcomponent { } Implementation of bidirectional binding twoway-bind.component.ts: Import {Component, OnInit} from ' @angular/core '; @Component ({ selector: ' App-twoway-bind ', Template: ' Note that the above [(Ngmodel)] This writing, () represents the output, [] represents the input, th

() { this.info=student; } HTML: In property bindings, a value is passed from the model to the target property on the screen. We mark the target property by enclosing the name in square brackets, []. This is a one-way data binding from the model to the view. In event bindings, values are passed from the target property on the screen to the model. We mark the target attribute by enclosing the name in parentheses, (). This is a reverse one-way data binding from view to model. When the bindi

ANGULAR2 's dependency injection contains too much content, one of the key points is the injector, and the injector is very difficult to understand, today we do not delve into the contents of the injector, we can refer to the official documentation, we are today the level of the injector. That is, the container in which the component gets the service chooses which one to specify. Let's briefly introduce a background: There are 3 components appcompon

Set up the. Net Core + Angular2 environment, coreangular2Environment setup: 1) node. js version> 5.0, NPM version> 3.0, TypeScript version> 2.0 (the latest version is enough) 2) install NTVS 1.2 (node tools for vs), TSVS dev 1.4 (TS for) 3) Build a package. json, tsconfig. json, gulp. js File 1. package. json { "name": "template.angular2", "version": "1.0.0", "licenses": [ { "type": "MIT", "url": "https://github.com/angular/angular.io/

Providers: [{provide:parent, Useexisting:forwardref (() = parentcomponent)}] The parent is the provider's token, and parentcomponent is the type of the alias provider that injects the type provider into the parent component's injector, and the child component can use the parent token as the constructor parameter type to inject the service. Gets the parentcomponent. Parentcomponent refers to itself, causing a circular reference, and must use a forward reference Forward

In this tutorial we were going to learn what simple it was to create custom form field driven validators while using Angular 2 model driven forms. These type of validators is really just plain functions that follow a set of conventions.We is going to learn how to write a custom form validator and what the validating function needs to return with order to re SPECT the Angular 2 form field validation contract.Define a custom validator:Import {FormControl} from "@angular/forms"; export function val

have to configure the menu to click in, open the layouts directory under the full-layout.component.html, add under Componentsclass="nav-item"class="nav-link " Routerlinkactive="active" [routerlink]="['/components/myinfo '] "class="icon-star">Why would you like to open the full-layout.component.html file plus menu? And above is the same problem.The running effect is:Then add other pages to the same principle.Now to answer the above question:Path"', Component:fulllayoutcomponent,data: {title:'Ho

Divclass= "Form-field"> label>Confirm Password:label> inputtype= "text"Formcontrolname= "Confirm"[(Ngmodel)]= "Signup.confirm"name= "Confrim"> Div*ngif= "!signupform.valid"> span*ngif= "signupform.get (' confirm '). Haserror (' ConfirmPassword ') signupform.get (' confirm '). Touched">{{signupform.get (' confirm '). Errors?. Confirmpassword.message}}span> span*ngif= "signupform.get (' confirm '). Haserror (' required ') signupform.get (' Confirm '). Dirty">This field is requ

ANGULAR2 Dependency injection contains too much content, one of the key points is the injector, and the injector is very difficult to understand, today we do not delve into the content of the injector, you can refer to the official documentation, we today to the level of the injector.That is, the container that gets the service for the component chooses which one is specific.Let's start with a background: There are 3 components appcomponent root compo

We can nest Formgorup: this. Reactiveform = fb.group ({ username: [ '], [ validators.required, validators.minlength (3) ] , pwds:fb.group ({ "' , "' }, {validator:passwordvalidator}) });We make password as an own group. So in HTML, we need to use formgroupname istead of Formcontrolname.form[Formgroup]= "Reactiveform"novalidate AutoComplete= "Off"> Divclass= "Form-field"> label>Username:label> inputFormcontro

| async"> a[Routerlink]= "Hero.id"routerlinkactive= "Active"[Routerlinkactiveoptions]= "{exact:true}">{{Hero.name}}a> Li> we can also do [routerlink]= "['/heros ', hero.id]", this would point to "HEROS/1"; If you do: [routerlink]= "[' heros ', hero.id]", this would point to "HEROS/HEROS/1" Since we is already in Heros MoD Ule We just need to does [routerlink]= "Hero.id", point to "HEROS/1 " -ul>Heros.component.ts:Import {Component, OnInit} from '@angular/core'; import {Starwarsservice} fro

Ngformcontrol-Binding an existing Control objectUnlike the ngcontrolname directive, Ngformcontrol binds an existing control/control object to a DOM element. You can use the Ngformcontrol directive when you need to initialize an input value .In the following code, using the Ngformcontrol directive to bind a DOM element to the member variable of the component Ezcomp movie, we need to create the control object first in the constructor :1 @View ({2 //to bind an INPUT element to a control object

// 2 seconds );For the first time, we have used this interface several times in our components:Src/app/app.component.tsHeroes:hero[]; Selectedhero:hero;Src/app/hero-detail.component.tsExport class Herodetailcomponent { Hero:hero;}So far, our service is even written!Using the serviceLet's test the service we've written in the component:Src/app/app.component.ts (partial code)Import {Heroservice} from './hero.service ';Src/app/app.component.ts (partial code)Providers: [Heroservice]Src/a

Import {elementref} from "@angular/core";Constructor (private element:elementref) { //Now, we can reference to:this.element}This.element.nativeElement ('. Js-banner-container '),ElementrefProvides access to the underlying native element (DOM element).Import {aftercontentinit, Component, elementref}From' @angular/core '; @Component ({Selector' App ',Template export class app implements aftercontentinit {node:string; constructor (Private Elementref:elementref) {} ngaftercontentinit () {const tmp

"Reactiveform"Novalidate autocomplete="off"> class="Form-field"> "title"> class="Field-error-message"*ngif="reactiveForm.controls.title.errors?. Required">Title isRequiredIn this tutorial we is going to learn how do we mark form fields in error and display error messages to the user of Angular 2 model driven forms. We'll see that the approach are similar than what do we do while using template driven forms, but in this case we don t hav E template exports available.We are going to see how the Fo

Sitestatetype = { [key:string]: any}; @Injectable () Export class envsvc{ _envstate:sitestatetype = { url:window.location.href,//call Envhelper Gets the current application environment Configuration Config: Envhelper.getenvconfig (window.location.href) }; Constructor () { } get Envstate () {//In an open get application environment state, clone a copy of _envstate, avoid external program modification Configuration Return this._envstate = this. _clone (this._envstate); } Set Envs

Angular 2 copy of a timesheet.js (JavaScript library for HTML5 CSS3 time sheets)Usage:NPM Install Ng2-timesheet--saveApp.component.tsImport Models and Componentimport {timesheetitem} from ' Ng2-timesheet/src/models/timesheet-item '; import {timesheet} From ' Ng2-timesheet/src/models/timesheet ', import {timesheetcomponent} from ' Ng2-timesheet/src/timesheet.component ' ; ...//Add Directive Reference directives: [Timesheetcomponent] ...//define data Model Timesheet = new Timesh 2002, [New Tim