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Angular News Sunday, December 10

Angular News TLDR / Table of Contents

Score: 73500
Tweeted At: Fri Dec 08 22:08:01 +0000 2017
Publish Date: 2017-12-06T12:13:13+00:00
Author: admin

  • In this post let’s talk about creating data tables with Angular Material 2 and populating them with data from Firestore.
  • Now generate a new service, which we’ll be using to pull data from firestore using the below command.
  • Open up app.component.html file and add the below code .
  • We simply have two methods to add a document to our collection and to pull documents from the collection.
  • In our next post we’ll see how to sort and filter data in a data table.

Tags: Angular Material, data, src/environments directory, post, data tables

Score: 62500
Tweeted At: Sat Dec 09 19:35:03 +0000 2017
Publish Date: 2016-08-01T08:00:00+00:00
Author: Chris Nwamba

  • When you clone the demo, run the following to start the server: – # Move in to server project folder – cd server – – # Install dependencies – npm install – – # Run – npm start – Before moving on to building something, let’s have a birds-eye view…
  • /model/comment’; – import {Observable} from ‘rxjs/Rx’; – – // Import RxJs required methods – import class CommentService { – // Resolve HTTP using the constructor – constructor (private http: Http) {} – // private instance variable to hold base url – private commentsUrl = – – } – We are…
  • catch((error:any) =gt; || ‘Server error’)); – – } – Using the http instance we already have on the class, we call it’s get method passing in the base url because that is the endpoint where we can find a list of comments.
  • We are maintaining strictness by ensuring that the service instance methods always return an observable of type Comment: – /* * * * * */ – export class Comment { – constructor( – public id: Date, – public author: string, – public text:string – ){} – } – With the…
  • The rest of the code has the above structure but different HTTP methods and arguments: – // Add a new comment – addComment (body: Object): Observable { – let bodyString = JSON.stringify(body); // Stringify payload – let headers = new Headers({ ‘Content-Type’: ‘application/json’ }); // … Set content type to…

Tags: comment, HTTP requests, comment module, comment box, comment module exports

Score: 40000
Tweeted At: Sun Dec 10 01:30:06 +0000 2017
Publish Date:

  • In “Source Location” paste the angular-seed clone URL that you’ve just copied, then on the “Target Directory” field type in or browse to the folder that you want to store the repository in on your local machine.
  • In the browser type in the http://localhost:8000, you will see that angular-seed is hosted on the web server – – angular-seed is an AngularJS application skeleton template.
  • In the command line navigate to the angular-seed git in your local machine, then type “npm install” without the double quotes.
  • bowerrc file and change the directory to “app/js/lib”, the final markup should look like the followingNote: If you need more information on bower you can visit this blog that I wrote about it12.
  • After “npm install” command finish executing type in “npm start” in the command line to have nodejs start a local web server

Tags: Open Git GUI., Git GUI click, application skeleton template, boiler plate template, Github angular-seed page

Score: 22500
Tweeted At: Sun Dec 10 11:11:54 +0000 2017
Publish Date:

  • High performance applications always bring better user engagement and experience.
  • We often implicitly judge the quality of given application by it’s initial load time and responsiveness.
  • In the world of the single-page applications, we usually have to transfer huge amount of resources over the wire which dramatically impacts the initial load time.
  • In the first part, we’ll discuss different techniques which can improve the runtime performance of our application in order to help us achieve rendering with 60fps!
  • In the second part of this talk we’ll explain essential practices that can help us reduce the initial load time of our Angular applications.

Tags: initial load time, High performance applications, explain essential practices, entire component tree, user engagement

Score: 16000
Tweeted At: Sun Dec 03 19:30:08 +0000 2017
Publish Date: 2017-03-15T19:56:11.140000+00:00
Author: Eudes Petonnet

  • TestBed configuration, compiling the components, creating the one you need, getting access to the directives instances, cleaning up, … And if you are working on a real-life project, you probably have many spec files across your code base, all needing the same boilerplate.
  • There are two main advantages to this approach over local variables: it helps fight the memory leaks that keep creeping up on large projects’ tests, and it also offers a very easy way to have your beforeEach and it in two different files, which is much harder to set up…
  • One of the recommended patterns (and the one we use the most, by far, in Clarity) is to use a “test host” component which includes the actual component to test in its template:This example makes a few assumptions to keep it simple: the templates are all inline or inlined at…
  • The one difference is that we’re getting the tested directive through the injector, rather than componentInstance, once again to be able handle attribute directives and components at the same time.The final spec fileLet’s remove all the boilerplate from the user component’s spec file and use our brand new context:It’s now entirely…
  • That’s a win!To improve this further, you could easily:include the setup() call at the root of the tests to have it always be available,allow passing extra directives to declare or modules to import, in case your component depends on other ones,add additional shortcuts to the TestContext interface,throw explicit errors when…

Tags: memory leaks, spec files, actual spec files, sneaky memory leaks, two-way binding works

Score: 15000
Tweeted At: Sun Dec 10 01:08:03 +0000 2017
Publish Date: 2017-12-10T01:02:34.112000+00:00
Author: Vigo Webs

  • we can use this to take a clone of the transcluded DOM element, compile it, and insert it.compile – The compile function runs before the directive template are attached to the DOM and before scope is linked to DOM.
  • In this case, Angular does not create a separate scope for the directive and it will have the controller scope in which it has declared.true – a new scope object is created that prototypically inherits from its parent Object {} – creates an isolated scope.Q4.
  • Binding in this way, the parent scope will not be notified if the value changes in the directive and vice versa.Two way binding — mentioned as ‘=’.
  • Any changes in the directive scope property will be updated to the parent property and reverse is also same.Method binding — mentioned as ”.
  • Why do we use $timeout and $interval in Angular instead of default functions?If we use setTimeout and setInterval, Angular does not aware of the scope changes and will not trigger the $digest cycle for us.

Tags: scope, angular js interview, directive scope, directive scope property, js interview questions

Score: 12500
Tweeted At: Sun Dec 10 01:16:37 +0000 2017
Publish Date:

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  • Email | Twitter | Facebook – – CouponTrump sets cookies to process discounted links to courses, collect anonymous statistics, and remember your preferences.

Tags: CouponTrump sets cookies, discount code, sales revenue, courses, privacy policy

Score: 7500
Tweeted At: Sat Dec 09 21:01:06 +0000 2017
Publish Date: 2017-12-05T15:00:00+00:00
Author: Pam Lahoud

  • This step-by-step guide on getting started with Node.js and Angular comes to us from Premier Developer consultant Crystal Tenn.
  • Here is a simple step by step guide to getting your Angular application setup with Visual Studio Code and Node.
  • This guide will simply help you know what to install, the commands to run in PowerShell, and some basics about where to start building your app using Visual Studio Code.

Tags: Visual Studio Code, Angular application setup, consultant Crystal Tenn, Select Folder, step-by-step guide

Score: 1458
Tweeted At: Fri Dec 08 22:28:32 +0000 2017
Publish Date: 2017-12-06T00:00:00+00:00
Author: SteveSandersonMS

  • x SDK includes project templates for Angular, React, and React with Redux.
  • This documentation is not about those released project templates.
  • This documentation is for the next version of the Angular, React, and React with Redux templates, which we hope to ship in early 2018.

Tags: React, project templates, Redux templates, Angular, preview release

Score: 1305
Tweeted At: Fri Dec 08 07:54:11 +0000 2017
Publish Date:

  • Remember how awful coding in JavaScript gets when you have to insert several variables in a string?
  • Template Literals are string literals that allow embedded expressions.
  • However, template literals makes it super easy to do this and in a neat and elegant way too.
  • Notice that backticks were used instead of quotes and the variables all appear within the dollar sign and curly braces.
  • Template literals allows you to move to a new line by literally moving to a new line without using any character.

Tags: template literals, new line, proper sentence, main text, article

Score: 940
Tweeted At: Sat Dec 09 16:47:37 +0000 2017
Publish Date:

  • Hybrid mobile app development has come a long way in recent years, to the point that many, if not most, types of applications can be built with standard Web technologies.
  • We will review what the Web has to offer in 2017 and how Ionic and Angular can help building world class applications on many platforms with only Web technologies.

Tags: Hybrid mobile app, long way, standard Web, development, point

Score: 420
Tweeted At: Sat Dec 09 22:02:07 +0000 2017
Publish Date:

    Tags: SUBSCRIBE, Warsaw, lecture, SHARE, place

    Score: 220
    Tweeted At: Sun Dec 10 05:34:08 +0000 2017
    Publish Date:

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