Angular Study Notes: angular's $ filter service analysis and angular Study Notes
First, we will introduce the $ filter service:
1. $ filter is a dedicated service for formatting data;
2. AngularJS has eight built-in filters: currency, date, filter, json, limitTo, lowercase,
Angular service plug-in 1 -- Dialog Box prompt box, angular service plug-inDialog Box Service:
(The modal style of amazeui needs to be called)
Const angular = require ("angular"); cons
Describes how to add an interceptor to the $ http service built in Angular. js and how to add an interceptor to angular. js.
Preface
In the Angular framework, the creation team encapsulates Ajax requests for users and exposes related interfaces through the $ http service.
You need to define a to is able to use it elsewhere in your app as a TemplateRef . You can store these TemplateRef s in a Service and then access them the from any @Directive or in @Component your app.We want to create a service and a component together to store all the templates.ServiceImport {injectable, templateref} from "@angular/core"; @Injectable () Export
First, introduce the next $filter service:
1, $filter is used for data format of the special services;
2, Angularjs built-in currency, date, filter, JSON, LimitTo, lowercase, uppercase, number, by the 8 filter;
3, filter can be nested use, with the pipe symbol "|" To separate (a bit like Linux);
4, filter can pass parameters;
5, user can customize filter.
Introduction to the built-in filter:
Currency: Used to format money, such as "$" or "¥" be
1. English version
angularjs:factory vs Service vs ProviderBy Tyler on the May 4, with the Comments in Technical
When you first get started with Angular, you'll naturally find yourself flooding your controllers and scopes with unnecess ary logic. It's important to realize early on this your controller should be very thin; Meaning, most of the business logic and persistent data in your application should be
HTML> HTMLng-app="MYAPP"> Head> Metacharset="UTF-8"> title>titletitle> Scriptsrc="Js/angular.min.js">Script> Head> Bodyng-controller="My"> spanng-bind="name1">span> spanng-bind="name2">span> spanng-bind="Name3">span> Body> Script>varapp=angular.module ("MYAPP",[]);app. Controller ("My",["$scope","Serv","Serv2","Serv3",function($scope, S1,S2,S3) {$scope.name1=S1; $scope.name2=S2; $scope.Name3=S3; }])///factory method to implement custom services in the project is more frequent,//in its simple syn
App = Angular.module ("app", []); App.value ("Realname", "Liyang");//can changeApp.value ("User", {name: "Liyang"), pwd:"123456"})//can be directly bound to a JS objectApp.constant ("Baidu", "www.baidu.com");//can not be changed, these 2 are generally used for simple configuration filesApp.factory ("Data",function(){ return"I am the result";//Of course, this can also return JS object}) App.service ("Servicedata",function(){ This. Name = "Zhangsan" This. PWD = "654321"})App.controller ("My
Angular HTTP is to get and save data. The main purpose is to fetch data from my JSON file. Directly on the code bar:1. First introduce the Promise mode: (direct code)Heroes.json:
12345678
{ NBSP;NBSP; "data" : [ NBSP;NBSP;NBSP;NBSP; {"id": 1, "name": " Windstorm "}, NBSP;NBSP;NBSP;NBSP; {" id ": 2," Name ":" Bombasto "}, NBSP;NBSP;NBSP;NBSP; {" ID ": 3," "Name": "Magneta"}, NBSP;NBSP;NBSP;NBSP; {"id": 4, "name": "Tornado
Angular has built-in services such as $location services that interact with the browser's address bar, and $http services that interact with the server.Naturally, you can customize the service yourself.Using services can be a good place to interact and share state between multiple angular controllers, so creating a service
First, $watch.Let's talk about angular watch. It can monitor changes in the data model,$scope. $watch (' name ', function (New,old) {}), watch has two parameters, the first one is the name of the watch, The second is a function that executes when the monitored person changes. This function also has two parameters, the first one is the new value, the second is the previous value. Note that the previous value is relative to the new value. When the Watch
. $http. Head (URL string, config Optional configuration-object type) returns the Httppromise object4, $http. Jsonp (url string, config Optional configuration-object type) return Httppromise object5. $http. Post (URL string, data object or String, config optional configuration-object type) returns the Httppromise object6. $http. Put (URL string, data object or String, config optional configuration-object type) returns the Httppromise objectSubmitting data data with
Details about the Custom Service, Provider, Factory, and angularprovider in Angular
The background came from an interview some time ago. The interviewer looked at my Angular controller and added a variety of methods with repeated features, but patiently tell me that improving Angular code reusability requires three met
The messageservice code is as follows:
import { Injectable } from '@angular/core';import { Subject } from 'rxjs';@Injectable({ providedIn: 'root'})export class MessageService { private messageSource = new SubjectThe code of the message sending component is as follows:
TS
import { Component} from '@angular/core';import { MessageService } from '../service/message
Angular JS (angular.js) is a set of frames, templates, and data binding and rich UI components that are used to develop Web pages. It supports the entire development process, providing a framework for Web applications without the need for manual DOM operations.
Angularjs is designed to overcome the lack of HTML in building applications. HTML is a good declarative language for static text presentation, but it is weak to build a Web application. Here A
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
1.AngularJS, you can create your own services, or use built-in services;2. In Angularjs, a service is a function or object that can be used in your ANGULARJS application;Angularjs has built more than 30 services; there is a $location service that can return the URL of the current page;var app=angular.module (' myApp ', []);App.controller (' Customersctrl ', function ($scope, $location) { $scope. Myurl= $lo
Scenes using angular are typically application-class sitesIt also means there's a lot of controller,service,directive and so on.Under normal circumstances we have to download and register the content once, due to the large number of files, the efficiency of the first load is really not small.Angular-async-loader an excellent Angular asynchronous load extension
{ Restrict: "Acem" function (Scope,element,attrs) {attrs. $addClass ("Red" ); Element.bind ("MouseOver", function); }); var count = 0function () {Console.log (Count++ For the instruction this piece, really need to write many more uses in order to really understand these content and the usage ... This summary article about the instruction does not have much direct use of the code, but each of the properties have been tested for usage, also wrote some of their own projects or write their own play
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. Prov
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