Аурелия Анужите

What is Aurelia

Aurelia is a collection of Modern JavaScript modules, which when used together, function as a powerful platform for building browser, desktop and mobile applications, all open source and built on open web standards.

Let’s unpack this statement a little…

A Collection of Modern JavaScript Modules

Rather than being a monolithic framework, Aurelia is broken down into a collection of feature-oriented modules. Examples of feature modules include metadata, dependency injection, binding, templating, router and more. Each module is written using ECMAScript (aka JavaScript) or TypeScript (a strict superset of JavaScript that adds compile-time type checking). Many of these modules can be used individually in any type of JavaScript project, including Node.js.

A Powerful Platform for Building Apps

While Aurelia’s modules can be used for many purposes, their true power lies in using them together as a front-end application platform. If your end goal is to create rich, engaging experiences for your customers, meeting or exceeding what is found in modern native applications, Aurelia provides the means. Through its rich component model, dynamic UI composition, routing and extensive set of plugins, Aurelia provides a comprehensive set of capabilities and tools to build any front-end experience you can dream up, whether you’re targeting the browser, mobile or desktop.

Open Source

With all the power and capability that Aurelia offers, you might expect it to have an expensive licensing model or be closed source, but neither is true. Aurelia is free and its code is open sourced under
the MIT License
, a very permissive license used by many popular web projects today. Its starter kits and documentation are available under
the Creative Commons 0
license. It also has
a Contributor License Agreement (CLA)
for those who wish to join the core team in working on Aurelia. Ultimately, this means that you can use Aurelia without fear of legal repercussions and we can build it in the same confidence.

Conditionals

Aurelia has two major tools for conditional display: , and . The difference is that removes the element
entirely from the DOM, and toggles the CSS class which controls the element’s visibility.

The difference is subtle but important in terms of speed and usability. When the state changes in , the template
and all of its children are deleted from the DOM, which is computationally expensive if it’s being done over and over.
However, if is being used for a very large template, such as a dashboard containing thousands of elements with
their own bound data, then keeping those elements loaded-but-hidden may not end up being a useful approach.

Here’s our basic «Hello World» that asks the user if they want to greet the world first:

However, if we just want to hide the element from view instead of removing it from the DOM completely, we should use
instead of .

When unchecked, our «Hello World» div will have the class, which sets if you’re using
Aurelia’s CSS libraries. However, if you don’t want to do that, you can also define your own CSS rules that treat
differently, like setting or .

Conditionals can also be one-time bound, so that parts of the template are fixed when they’re instantiated:

There’s a 50-50 chance that we’ll greet the world, or put it off until later. Once the page loads, this is fixed,
because the data is one-time bound. Why don’t we use ? If we think about what does, it doesn’t
really make sense. We’re saying we want a CSS class to be applied that will hide an element, and that it will never
change. In most cases, we want to refuse to create an element we’ll never use.

Complementing , there is . Used in conjunction with , will render its content when does
not evaluate to true.

Elements using the template modifier must follow an bound element to make contextual sense and function properly.

Caching the view instance when condition changes

By default, caches the underlying view model instance. Although the element is being removed from the DOM and
the component goes through and lifecyle events, its instance is kept in memory for further condition
changes. Therefore, when the element is hidden and then shown again, does not need to initialize the component
again.

You can opt-out this default behavior by setting the binding of the directive explicitly. This is
especially useful when using on and initializing them on every appearance is
crucial.

Binding

Binding in Aurelia allows data from the view-model to drive template behavior. The most basic example of binding
is linking a text box to the view model using . What if we let the user decide who they want to greet,
and whether to say Hello or Goodbye?

Above, we have a text box that asks for the name of the person to greet, and a checkbox indicating whether they’re
arriving. Because we defined as «John Doe» in our view-model, the initial value of the text-box will be «John
Doe», and with set to , our checkbox will start checked. When we change the name, the person we’re
greeting will change with it: «Hello, Jane Doe!». If we uncheck the box, the greeting will change: «Goodbye, Jane Doe!»

Notice that the way we set up the binding was by using and . That within the attribute is important: whenever you see the , Aurelia is going to do something with that attribute. The most important thing to take away from this section is understanding that Aurelia will link attributes to the left of the with actions to the right of the .

You can learn more about data-binding in the Binding section of our docs.

Binding Focus

We can also use two-way data binding to communicate whether or not an element has focus:

When we click the input field, we see «true» printed. When we click elsewhere, it changes to «false».

Binding Scopes Using

We can also declare that certain parts of our markup will be referencing properties of an object in the view model, as below:

Why choose Aurelia

There are many frameworks to choose from today. We believe that Aurelia provides a fresh and exciting approach to front-end development with power and flexibility that is unmatched by other options. That said, we recognize that each team and each project has different needs. You might find Aurelia to be the right choice for you if…

• You want an all-in-one solution — Aurelia provides core capabilities like dependency injection, templating, routing and pub/sub, so you don’t have to piece together a bunch of libraries in order to build an application. On top of this rich core, Aurelia also provides a number of additional plugins for internationalization, validation, modal dialogs, UI virtualization and much more. You also don’t have to cobble together a bunch of different tools. Aurelia provides a CLI for generating and building projects, a browser plugin for debugging and a VS Code plugin as well. Yet, you’re not forced to use any of these as Aurelia is structured to enable you to swap out any detail, even down to the templating/binding engine, in order to guarantee maximum flexibility.
• You need blazing rendering speed and great memory efficiency — In 3rd-party benchmarks like DB Monster, Aurelia renders faster than any other framework today. Because of its batched rendering and observable object pooling, Aurelia also utilizes less memory and causes less GC churn than other frameworks.
• You require the safety of uni-directional data-flow, but need the productivity of data-binding — Aurelia features an observable-based binding system that uses uni-directional data-flow by default, pushing data from your model into your view via a highly efficient, DOM-batching mechanism. Two-way binding can also be leveraged for HTML form controls, allowing for increased developer productivity, without sacrificing the safety of uni-directional flow or that of component encapsulation.
• You desire API stability amidst a turbulent JavaScript landscape — Aurelia follows Semver and works hard not to make breaking changes to its APIs. We’re proud to say that we’ve continued to innovate and advance the platform while having no breaking changes to core framework APIs since our 1.0 release on July 27, 2016.
• You value high standards compliance — Focused on ES2015+ and W3C Web Components while avoiding unnecessary abstractions, Aurelia provides the cleanest and most standards-compliant component model you’ll find anywhere.
• You think a framework should «get out of your way» — Aurelia is the only framework that lets you build components with plain, vanilla JavaScript/TypeScript. The framework stays out of your way so your code remains clean and easy to evolve over time.
• You like programming models that are easy to learn and remember — Because of its simple, consistent design, developers are able to learn a very small set of Aurelia patterns and APIs while unlocking limitless possibilities. Simple conventions help developers follow solid patterns and reduce the amount of code they have to write and maintain. This all results in less fiddling with the framework and more focus on the application.
• You prefer a platform that integrates well with other frameworks and libraries — Because of the extensible design of Aurelia and its strict adherence to web standards, it’s easy to integrate Aurelia with any 3rd party library or framework, including jQuery, React, Polymer, Bootstrap, MaterializeCSS and many more.
• You love or want to be a part of open source — Aurelia is open sourced under the MIT license and doesn’t add or remove special clauses or conditions to the license. We’re proud of the work our community has done together and we’d love you to join in and help us make Aurelia better for everyone.
• You thrive on being part of a welcoming community — With one of the largest and most active developer gitter channels, a huge number of contributors and a large, active core team, Aurelia has an amazing community. Our core team and community love to welcome new developers and we all work hard to help each other succeed.

A Simple Template

All Aurelia templates must be wrapped with a element. The most basic template is a component that prints
«Hello World»:

This template could be a page in an Aurelia application, or it could be the view for a custom element. A template
containing only boilerplate could be useful as a footer containing copyright information or disclaimers, but where’s
the fun in a static template?

All Aurelia templates work with a view-model, so let’s create one:

Let’s bind the property in our view-model into our template using Aurelia’s string interpolation:

One of the key features of Aurelia’s templating system is helping to reduce context switching between your javascript
code and your template markup. String interpolation using the operator is a new feature in ES2015 that makes it
simple to insert values into a string. Thus, Aurelia uses this standard syntax in your templates.

When this template is run, Aurelia will insert the value of the property into the template where
appears. Pretty simple, right? But what if we want logic in our string interpolation. Can we add our own expressions?
Absolutely!

In our template, when is true, the ternary operator makes our result , but when it’s false, it
makes our result . Our view-model code initializes to and changes it to after 5
seconds (5000 milliseconds). So when we run the template, it will say «Hello, John Doe!» and after 5 seconds, it will
say «Goodbye, John Doe!». Aurelia re-evaluates the string interpolation when the value of changes!

Жизненный цикл

Медузы аурелии раздельнополы. ( и ) созревают в , расположенных в карманах желудка. выбрасывают через рот зрелые сперматозоиды в воду, откуда они проникают в выводковые камеры . В выводковых камерах происходит яиц и их развитие. Полностью сформированные личинки покидают выводковые камеры и несколько суток плавают в толще воды. Прикрепившись к субстрату, личинка трансформируется в одиночный  — , которая активно питается, увеличивается в размерах и может размножаться , отпочковывая от себя дочерних сцифистом. Весной начинается процесс поперечного деления сцифистомы — и формируются личинки медуз . Они выглядят как прозрачные звёздочки с восемью лучами, у них нет краевых щупалец и ротовых лопастей. Эфиры отрываются от сцифистомы и уплывают, а к середине лета постепенно превращаются в медуз.

Repeaters

Repeaters can be used on any element, including custom elements, and template elements too! Here are a few different data types that can be iterated with a repeater.

Arrays

Aurelia is also able to repeat elements for each element in an array.

This allows me to list out my friends and greet them one by one, rather than attempting to greet all 7 billion
inhabitants of the world at once.

As mentioned before, we can also use the template element as our repeater — but we have to wrap it in a surrogate element:

Aurelia will not be able to observe changes to arrays using the syntax. To ensure that
Aurelia can observe the changes on your array, make use of the Array methods: , and
.

Two-way binding with arrays requires a special syntax due to the nature of the loop in javascript. Do not use ;doing so will result in one-way binding only — values typed into an input will not be bound back. Instead use the following syntax:

Range

We can also iterate over a numerical range:

Note that the range will start at 0 with a length of 10, so our countdown really does start at 10 and end at 1 before blast off.

Sets

I can also use an ES6 Set in the same way:

We can use repeaters with arrays, which is useful — but we can also use repeaters with other iterable data types, including objects, plus new ES6 standards such as Map and Set.

Map

One of the more useful iterables is the Map, because you can decompose your key and value into two variables directly in the repeater. Although you can repeat over objects straightforwardly, Maps can be two-way bound much more straightforwardly than Objects, so you should try to use Maps where possible.

One thing to notice in the example above is the dereference operator in — which breaks apart the map’s key-value pair into , the key, and , the value. Note that because all of our values are objects with the property set, we can get our friend’s name with , just as if we were getting it from JavaScript!

Objects

Let’s do the same thing, except with a traditional JavaScript object in our view-model:

We just introduced something called a «value converter». Basically, we take the object in our view model, , and run it through our value converter. Aurelia looks for a class named and tries to call its method with our object. That method returns an array of keys- which we can iterate. In a pinch, we can use this to iterate over Objects.

A common question pops up here: Why can’t we just dereference the object into like we did with Maps? The short answer is that JavaScript objects aren’t iterable in the same way that Arrays, Maps, and Sets are. So in order to iterate over JavaScript objects, we have to transform them into something that is iterable. The way you approach it will change based on what exactly you want to do with that object. There is also a
plugin
that can be included, which will transform Objects to become iterable maps that can be dereferenced using the syntax.

buy Aurelia Clothing

Flaunt your ethnic style with Aurelia

Aurelia is a popular Indian ethnic brand that was founded in 2009 by two brothers, Mr. A S Pasricha and Mr. O S Pasricha. The brand is a part of the company called TCNS Clothing CO. Limited. The motto of the brand is to make Indian outfits more appealing and affordable for the modern Indian woman. The best thing about Aurelia is that it stays true to Indian traditions and yet adds a contemporary twist that makes ethnic wear look interesting. The fusion approach of the brand makes it a hit among Indian women. Now, Indian women can look beyond a silk saree for flaunting their ethnic style.

Types of ethnic outfits by Aurelia

If you want to buy Aurelia clothing online, Myntra is the place for you. We have the entire clothing collection of Aurelia that will satiate your fashion appetite. You can find gorgeous top wear and fashionable bottom wear from the brand. The intricate embroidery, delicate detailing and rich hues of the brand’s ethnic wear are praiseworthy.

You can find Aurelia kurti and kurti sets of various designs, cuts and colours. You can choose between straight kurta, A-line kurta, pathani kurta, and layered kurta in attractive designs. The ethnic Aurelia tops are trendy and stylish. You can check them out if you are looking for Indo-western wear. The price of Aurelia clothing ranges between 259 INR and 4599 INR. The brand is most popular for its vast range of vibrant and fashionable kurtis that can be worn on all occasions.  

Style guide for Aurelia clothing

If you know how to style it right, you will enjoy shopping for Aurelia ethnic wear.

1. For a boho look, team a bright coloured kurta with beige coloured palazzos. You can opt for a printed straight kurti in pink or red. You can find them with beautiful embroidery work. Complete the look with a stylish hairdo, jhumkas and golden sandals.
2. If you don’t shy away from experimenting with fashion, wear a kurti as a dress when you go to a party. You can opt for a multicoloured kurti for a trendy look. Team your Aurelia dress with a matching belt and high heels. You will be surprised to see how your ethnic wear has transformed into a gorgeous dress.
3. Layered kurtas are the flavour of the season. They look chic and stylish. Team your Aurelia layered kurta with matching leggings for a fashionable look. Accessorize your ethnic ensemble with long danglers and peep toe sandals.
4. Instead of wearing a regular Anarkali, buy a long kurta with rich embroidery work. Team it with chudidar leggings and a beautiful Aurelia dupatta for a gorgeous ethnic look. You can find Aurelia dupattas in various prints, designs, and fabrics.
5. For a sassy look, you don’t need to wear dresses. Instead, team your ripped denim jeans with a sleeveless Aurelia kurta for a casual chic look, especially when you are travelling or hanging out with your friends.

Fashionable women cannot resist the charm of the feminine and trendy Aurelia ethnic apparel. So, what are you waiting for? If you are tired of wearing salwar suit, log on to Myntra right away and make some trendy additions to your ethnic wear collection.