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Today in Top Angular News – Friday, December 7

Today in Top Angular News – Friday, December 7

Today’s topics include Angular, ITNEXT, JavaScript, Angularjs, Logouts, Node, Tutorial, Lisbon, FrontEnd, webdev, webdeveloper, and asyncPipe. Special thanks to contributors 1730841446975197, Ankit Sharma, @amcdnl, Austin, @dalenguyen, Dale Nguyen, @NetanelBasal, Netanel Basal, 10208572694571329, Victor Savkin, Paul Krill, @zbarbuto, Zak Barbuto, Aslan Vatsaev, legocoder, geekstrick, webcodegeeks, uncle_dallas, LeoLaneseltd, and SKlausDev.

What’s new in Angular 7.0 and how you can upgrade –

While creating a new Angular application, the Angular CLI will prompt the user to select if they want to add features like Angular routing or the format of the stylesheet they want to use in their application
Angular 7.0 applications will use the Bundle Budget feature of Angular CLI. Refer to the image below:
To check the version of angular CLI installed in your machine, run the following command:
Refer to the image below:
Create the Angular 7 app
Open Visual Studio Code and navigate to View Terminal. Once the application is created successfully, run the following command to open the project:
Refer to the image below:
This will open the code file of our application in a new VS Code window. {
"name": "ng7-app",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
"private": true,
"dependencies": {
"@angular/animations": "~7.0.0",
"@angular/common": "~7.0.0",
"@angular/compiler": "~7.0.0",
"@angular/core": "~7.0.0",
"@angular/forms": "~7.0.0",
"@angular/http": "~7.0.0",
"@angular/platform-browser": "~7.0.0",
"@angular/router": "~7.0.0",
"core-js": "^2.5.4",
"rxjs": "~6.3.3",
"zone.js": "~0.8.26"
"devDependencies": {
"@angular/cli": "~7.0.1",
"@angular/compiler-cli": "~7.0.0",
"@angular/language-service": "~7.0.0",
"@types/node": "~8.9.4",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "~4.5.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.0.0",
"karma-chrome-launcher": "~2.2.0",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~7.0.0",
"tslint": "~5.11.0",
"typescript": "~3.1.1"
}Execution Demo
The name of our Angular application is ng7App which is inside the ng7Demo directory. Refer to the image below:
If you want to update your application from Angular 6 to Angular 7 then run the following command in the project folder:
ng update @angular/cli @angular/coreConclusion
We have learned about the new features of Angular 7.0. Continue reading

React for the Angular Dev – Austin – Medium

  • This framework powers the Angular Material component library.

React for the 12

Angular and React have dominated the landscape of JavaScript frameworks for some time now. Instead I want to show those using Angular, that haven’t had a chance to get their feet wet in other frameworks, what React looks like. When ing into React, I quickly realized that React is more of a component library whereas Angular is more of an application framework. One of the coolest things about JavaScript is it’s a dynamic language and thus that becomes untrue for many parts of an Angular application. Continue reading

How to logout after inactivity or idle — AngularJS – ITNEXT

  • htmldiv class=modal-headerbr / h3 id=modal-titleYou’ve Timed Out!

Create an AngularJS project
Well, you just need a html and/or a JavaScript file to run an AngularJS project
// index.html!doctype html
html ng-app="myApp"
script script script script script script src="app.js"/script
link rel="stylesheet"
section ng-controller="DemoCtrl"
button type="button" class="btn btn-success" ng-hide="started" ng-click="start()"Start Demo/button
button type="button" class="btn btn-danger" ng-show="started" ng-click="stop()"Stop Demo/button
/body/htmlFirst, I embeded angularjs and angular-idle to the head of the html file. // app.js angular.module('myApp', ['ngAnimate', 'ngSanitize', 'ui.bootstrap', 'IdleProvider', function(KeepaliveProvider, IdleProvider) { // configure Idle settings
wheel mousedown touchstart touchmove function ($scope, Idle, Keepalive, $uibModal) { $scope. html class="modal-header"
h3 class="modal-title" id="modal-title"{{ pc.title }}/h3
idle-countdown="countdown" ng-init="countdown=5" class="modal-body" id="modal-body"
uib-progressbar max="5" value="5" animate="false" class="progress-striped active"You'll be logged out in {{countdown}} class="modal-footer"
button class="btn btn-primary" type="button" ng-click="pc.ok()"OK/button
button class="btn btn-warning" type="button" Modal — this will show after the warning modal and the user doesn’t do anything. /h3
class="modal-body" id="modal-body"
You were idle too long…
/Please check the Plunker for the full working project. Continue reading

Getting to Know the Angular CDK Drag and Drop Feature

cdkDragHandleSortable Example
Adding the cdk-drop around a set of cdkDrag elements groups the draggables into a reorder-able collection. Sortable exampleThe package exposes the moveItemInArray method which on drop rearrange the items array according to the indexes. Sortable demoTransferring Items between Lists
The cdk-drop component supports transferring dragged items between connected drop zones. If the user is dragging an element within the same container, we perform a sortable action; otherwise, we transform the value from one collection to the other using the built-in transferArrayItem() method. ( note that this method mutates the array )

The enterPredicate input expects a function that is used to determine whether an item is allowed to be moved into a drop container. Continue reading

Metaprogramming, Higher-Order Components and Mixins with Angular Ivy

One could write a whole post about this data structure and how Angular uses it. In this post, let’s focus on the factory part of the data structure:
Angular will use the factory function to create a TodosComponent. directiveInject will walk up the node injector tree (think of walking up the DOM) trying to find the Store service. We can then apply to our component class, as follows:
This works but with a big caveat — it breaks tree shaking. Because the trees shaker will treat FromStore as a side-effectful function. Continue reading

What’s new in Angular Version 7

  • You can download the Angular 7 release from GitHub.

Version 7.1 of Angular, Google’s popular JavaScript framework for building mobile and desktop applications, is now available, with an improvement to the framework’s router. Angular provides dependency injection, particularly useful for assembling data services for applications, along with use of an HTML template to compose components. In Angular, developers still compose components with an HTML component that connects to TypeScript code for imperative parts of the program. While considered a minor release mainly focused on bug fixes, the router in Angular 7.1 has added the mode for , meaning guards and resolvers will ignore changes to optional parameters such as query and matrix parameters. Continue reading

Ajax Live Search Using Angular and Node

Live search is one of the most interactive and mandatory part of any web applications. In this tutorial i am going to develop one simple ajax live search box which takes user input and filter result live on the same page. It allows us to put those data which we need for search on client end, so for every key input there is no database call which in turn improves the system performance. On first request it will render the home page of application and on second router request it will load the values from database. This line basically performing search in loaded_demos which is nothing but data from database. Continue reading

DevMod — Probing your Angular application for fun and debugging

In this post, I wanted to go into detail on how the tool is built and the various debugging tools that Angular gives you out of the box, including ng.probe, that make it possible for debugging tools like DevMod and Augury to analyse your app. Jumping to the login.component.ts file by probing our login-component element and inspecting the constructor.Building up a picture of the app
The combination of these two global functions, along with the core injection tokens, are the foundation of how debugging tools like Augury and DevMod analyse your app. Augury showing all imports, providers and declarations in an application, as well as those defined by imported modules.Likewise, we can recursively drill down the DOM from the application root component — calling ng.probe on each HTML element we find and filtering for ones that have a componentInstance – to build up a picture of each of the Angular components we find along the way. Again, Augury already does something similar:
Augury’s view of the Angular component tree — built up from inspecting all elements in the dom.You can see why it is definitely a good idea to enable production mode on your app before pushing it live to production. The name of the function being decorated and any arguments passed get pushed onto an array of developer functions in the component’s metadataSo now we have a full list of all the Angular components in the DOM, we have a list of all your services, and each service or component might have some DEVELOPER_FUNCTION metadata on it, we can make a simple interface to show all the components that have developer functions on them and list each of the developer functions as a button that calls the method on the component instance. Continue reading

Create efficient Angular Docker images with Multi Stage Builds

  • You can see a full example in this GitHub repository:

In this write up we’ll see how to dockerize an Angular app in an efficient manner with Docker’s Multi-Stage Builds. At the time of writing this post, I'm using Angular v7

To dockerize a basic Angular app built with Angular CLI, we need to do the following:

We’ll do this in 2 stages:

At the root of your Angular project, create nginx folder and create a file named default.conf with the following contents (. conf):

# We label our stage as ‘builder’ ## Storing node modules on a separate layer will prevent unnecessary npm installs at each build npm ci /ng-app . /ng-app ## Build the angular app in production mode and store the artifacts in dist folder npm run ng build dist /usr/share/nginx/html/ ## From ‘builder’ stage copy over the artifacts in dist folder to default nginx public folder

And done, your dockerized app will be accessible at http://localhost:8080

And the size of the image is only ~15.8MB, which will be even less once pushed to a Docker repository. Continue reading

Angular application structure on enterprise level solutions

Did you ever wonder how to start an Angular application that will scale to enterprise level? Join us for Anton's talk about "Angular application structure on enterprise level solutions"! He will share with us his experience in building scalable Angular apps. In this talk we will see how Angular applications can be structured for a big/enterprise scale project. About the speaker

Anton Selin: 19:00 – Warm-up drink & Networking

• 19:30 – Angular application structure on enterprise level solutions

• Around 20:30: Drink, Snacks & Networking Continue reading

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