difference between angular 2 and angular 4

This article mainly describes the three attributes of the restrict attribute, replace attribute, and template attribute in the instruction. I. Restrict: String. Define the usage of commands in the view. There are four usage methods: 1. element: E 2. attribute: 3. Style Class: c 4. Note: m The restrict value can be any one or more combinations of the above four letters. If not specified, the default value is

asp. Net Core + Angular 2 Template for Visual Studio2017-01-11 08:45 by Little white brother, 2069 read, 19 reviews, favorites, compilation Over the months, I've been building support libraries and packages with a number of community contributors on github, and our ultimate goal is to create a template that starts as a starting point, based on the typescript code and ANGULAR2 hosted in the Asp. net core Pro

Angular 2 Form form In the Angular2 form form we need to understand the form data binding, data validation, data submission and so on, in the following example is not actually submitted to the background, this part of the content in the future Webapi to practice. Form Creation Here is an empty form Ngsubmit is an event for submitting data, the data is the content of the entire form form, and usually our

= "settingscontroller1 as Settings" One way to inject $ scope into the controller: NG-controller = "settingscontroller2" the second choice is more common in the angular community. It is generally used for templates and guides. However, property controllers are directly bound to avoid range. When multiple controllers control elements with the same name, use controller as to make your template more obvious. If you are writing your controller class, it

This is a creation in Article, where the information may have evolved or changed. Recently replaced some pages of my blog with angular. Results tragic discovery, POST request to Revel, Revel Paramsfilter parse not coarse to parameters. Looking at the request information, we find that the POST request of jquery and angular is somewhat different. jquery's content type is application/x-www-form-urlencoded, whi

ByFabian Gosebrink on October-Angular? 0 CommentsIn this blogpost I want to show what you do to debug a Angular 2 application with Chrome and VS Code.First of all, need to install the extension in VS Code.You can find it hereHttps://github.com/Microsoft/vscode-chrome-debugOr search in the Extensions tab for the plugin directly:After installing you probably has to

Before doing a crud method on a page, in reality the Webapi module is often written in separate service, so modify the original design and structure, or need a lot of knowledge.2017.11.15 Add patch method to improve service program optimization notation2017.11.27 added promise return value processing, the server returns the error message after processing.Because all of the crud methods are written in the service, the code in the background is much simpler, and the callback needs more information

Vue is only a view layer in MVVM, just a jquery-like tool library, not a framework, but a angular MVVM framework. Vue's dual Xiangbangding is based on the Getter/setter in ES5, and angular instead of implementing a set of template compilation rules, need to do so-called "dirty" check, Vue do not need. As a result, Vue is more efficient in performance, but at the expense of browsers below IE9. Vue needs to p

Http://stackoverflow.com/questions/14876112/difference-between-the-observe-and-watch-methodshttps://docs.angularjs.org/api/ng/type/$compile. directive.attributes$observe () is a method of the attributes object that can only be used to observe/watch the value change of a DOM attribute. It is called only within the directive. When you need to monitor and listen for a DOM that contains interpolation attribute, you need to use the $observe () function (fo

The project team did a angular share last night, just to discuss the issue. Although not to do front-end development, but interest caused. Access to the following information for subsequent useOwn understanding: The service is new, factory is directly used to get to the service object, the service has a more this. Provider can do some global configuration before initializing the injection, and there is a need to get the $get methodA relatively simple

= function () { settimeout (function () { $scope. Message = ' fetched after two seconds '; Console.log (' message: ' + $scope. message); $scope. $apply (); This triggers a $digest }; The code above uses the second form of $apply (), which is a form without parameters. Remember that you should always use the $apply () method that accepts a function as a parameter. This is because when you pass in a function to $apply (), the function is wrapped in a try...catch block, so the exceptio

Content is passed as children. View is the template of the current component.The view is initialized before the content and is ngAfterViewInit() therefore called before ngAfterContentInit() .@Component ({selector:'parent-cmp', Template:''})classparentcomponent {@ViewChild ('wrapper') Wrapper:elementref; @ContentChild ('mycontent') Content:elementref; Ngafterviewinit () {Console.log ('Ngafterviewinit-wrapper', This. Wrapper); Console.log ('ngafterviewinit-content', This. Content); } ngafterconten

The link method is a way for compile to throw outApplicationApp.directive ("ThumbNail", function () { return{ Restrict: "ACE", Replace:true, Templateurl: ". /tpl/tpl.html ", Compile:function (elem,attrs,transclude) { Dom Dom tree additions and deletions (at this point the DOM tree has not yet formed) Console.log ("compile phase"); Print only once only once return{ Pre:function (Scope,elem,attrs,controller) {

@ngrx/store builds on the concepts made popular by Redux and supercharges it with the backing of RxJS. The result is a tool and philosophy, that'll transform the the-the-approach state management in your Angular 2 applicatio Ns. This lesson takes a existing Angular 2 app and refactors it to utilize @ngrx/store, touchin

angularjs MVC all with the help of $scope (scope) Implementation1.ng instructionGetting objects from $scopefunction Commoncontroller ($scope) {$scope. Commonfn=function () { alert ("This is a universal feature! "); };} function Controller1 ($scope) { $scope. Greeting = { text: ' Hello1 ' }; $scope. Test1=function () { alert ("Test1"); };} function Controller2 ($scope) { $scope. Greeting = { text: ' Hello2 ' }; $scope. Test2=function () { alert ("Tes

); } } Fourth Step: Component Invocation (HERO.SERVICE.TS) Import {Component} from ' @angular/core '; Import {Hero} from './hero ' Import {Heroservice} from './hero.service ' @Component ({ Selector: ' App-root ', Templateurl: './app.component.html ', Styleurls: ['./app.component.css '], Providers: [Heroservice] }) Export Class AppComponent { title = ' Tour of Heroes '; Heroes:hero[]; Sele

DOCTYPE HTML>HTML>Head> MetaCharSet= "Utf-8"> title>JS Bintitle> Scriptsrc= "Https://code.angularjs.org/2.0.0-alpha.28/angular2.sfx.dev.js">Script> Linkrel= "stylesheet"href= "Https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">Head>Body>Egghead>Egghead>Scriptsrc= "App.js">Script>Body>HTML>varNote =Angular. Component ({selector:' Note ' }) . View ({Template:' }) . Class ({constructor:function() { }

Yesterday we also talked about the way angular introduces complex JSON files, and today we're going to learn one more way, and it's simpler and faster.First we introduce a angular plug-in, and write on the introduction of modules and consoles, in HTML to write the module name and console name.Then create a JSON fileThen we need to introduce this JSON file into the consoleWe then export the data in the JSON

Let's say you want-to-write a simple data-bing app. When your type in a text box, somewhere in the application would show th E result.In Angular 1, you can use Ng-model to finish all those stuff, but Angular 2, the concept behind have changed.index.html -HTML>Head> title>Angular

module.js first defines a type (function) Module. This type has two functions. One, which is the base class for all modules, after which each module is an instance of this module. This is also the ultimate source of our previous discussion module.exports .The second function of this module is to complete the loading process of the node module. The require() last thing we use is to call the Module.require method, and this method calls another internal method module._load. The final load method i