You can use placeholders to access dynamic information about the document;
Here's a list of built-in placeholders you can use: PrefixesDescription @win-foo dynamically evaluates window.foo() @el-foo dynamically evaluates $(current-selector).css(foo) @jq-foo dynamically evaluates $(current-selector).foo()
Following CSS will center vertically .header, dynamically changing margin-top as the window is resized:
Aurelia is a next generation UI framework. Whether you're building apps for the browser, mobile or desktop, Aurelia can enable you to not only create amazing UI, but do it in a way that is maintainable, testable and extensible.
Meteor.js is a cohesive development platform, a collection of libraries and packages that are bound together in a tidy way to make web development easier. It builds on ideas from previous frameworks and libraries to offer an easy way to start a prototype app, but it gives you the tools and flexibility to build a full fledged production app. There are libraries like Tracker and Blaze that the Meteor Development Group has built specifically for a reactive front-end experience.
Meteor.js is an open-source platform built on Node and MongoDB. It’s not just a framework, it’s more than that.
Is it comparable to Angular? Angular handles just the frontend parts of application. Meteor is more of a platform than Angular. It is both server and client-side code and handles a lot of the parts of applications that we need to create manually in Angular.
Promises in AngularJS are provided by the built-in $q service. They provide a way to execute asynchronous functions in series by registering them with a promise object.
A service that helps you run functions asynchronously, and use their return values (or exceptions) when they are done processing.
A new instance of deferred is constructed by calling $q.defer().
A new promise instance is created when a deferred instance is created and can be retrieved by calling deferred.promise.
$q is integrated with the $rootScope.Scope Scope model observation mechanism in angular, which means faster propagation of resolution or rejection into your models and avoiding unnecessary browser repaints, which would result in flickering UI.
var deferred = $q.defer(); var promise = deferred.promise;
Ng2Redux lets you easily connect your Angular 2 components with Redux, while still respecting the Angular 2 idiom.
The ability to access slices of store state as Observables
Compatibility with existing Redux middleware and enhancers
Compatibility with the existing Redux devtools Chrome extension
A rich, declarative selection syntax using the @select decorator
Node Install CMD
npm install --save redux ng2-redux
In redux, user events are captured and emitted up to a reducer for processing. In Angular 1.x, it was a very common anti-pattern to see bloated controllers with large chunks of logic dedicated to manage local state. By moving logic that can directly manipulate state to reducers, the burden placed upon our components become negligible. In Angular 2, you will often see dumb controllers who do nothing more than capture an event and emit it via output to its parent controller.