HTML attribute vs. DOM property in Angular

1-HTML attribute vs. DOM property

The distinction between an HTML attribute and a DOM property is crucial to understanding how Angular binding works.
Attributes are defined by HTML. Properties are defined by the DOM (Document Object Model).

• A few HTML attributes have 1:1 mapping to properties. id is one example.
  
• Some HTML attributes don't have corresponding properties. colspan is one example.
  
• Some DOM properties don't have corresponding attributes. textContent is one example.
  
• Many HTML attributes appear to map to properties ... but not in the way you might think!
  

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Angular Misc

Observables

Observables provide support for passing messages between publishers and subscribers in your application. Observables offer significant benefits over other techniques for event handling, asynchronous programming, and handling multiple values.
Observables are declarative—that is, you define a function for publishing values, but it is not executed until a consumer subscribes to it. The subscribed consumer then receives notifications until the function completes, or until they unsubscribe.
An observable can deliver multiple values of any type—literals, messages, or events, depending on the context. The API for receiving values is the same whether the values are delivered synchronously or asynchronously. Because setup and teardown logic are both handled by the observable, your application code only needs to worry about subscribing to consume values, and when done, unsubscribing. Whether the stream was keystrokes, an HTTP response, or an interval timer, the interface for listening to values and stopping listening is the same.
Because of these advantages, observables are used extensively within Angular, and are recommended for app development as well.

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Angular Forms

Introduction to forms in Angular

Handling user input with forms is the cornerstone of many common applications. Applications use forms to enable users log in, to update a profile, to enter sensitive information, and to perform many other data-entry tasks.
Angular provides two different approaches to handling user input through forms: reactive and template-driven. Both capture user input events from the view, validate the user input, create a form model and data model to update, and provide a way to track changes.
Reactive and template-driven forms differ, however, in how they do the work of processing and managing forms and form data. Each offers different advantages.
In general:

• Reactive forms are more robust: they are more scalable, reusable, and testable. If forms are a key part of your application, or you're already using reactive patterns for building your application, use reactive forms.
• Template-driven forms are useful for adding a simple form to an app, such as an email list signup form. They are easy to add to an app, but they do not scale as well as reactive forms. If you have very basic form requirements and logic that can be managed solely in the template, use template-driven forms.

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angular components and templates

Displaying Data

The live example / download example demonstrates all of the syntax and code snippets described in this page.

Showing component properties with interpolation

The easiest way to display a component property is to bind the property name through interpolation. With interpolation, you put the property name in the view template, enclosed in double curly braces: {{myHero}}.
When you bootstrap with the AppComponent class (in main.ts), Angular looks for a <app-root> in the index.html, finds it, instantiates an instance of AppComponent, and renders it inside the <app-root> tag.

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Angular2 Architecture Overview

Angular is a framework for building client applications in HTML and either JavaScript or a language like TypeScript that compiles to JavaScript.
The framework consists of several libraries, some of them core and some optional.

You write Angular applications by composing HTML templates with Angularized markup, writing component classes to manage those templates, adding application logic in services, and boxing components and services in modules.
Then you launch the app by bootstrapping the root module. Angular takes over, presenting your application content in a browser and responding to user interactions according to the instructions you've provided.

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Angular QuickStart

1-What is Angular?

Angular is a platform that makes it easy to build applications with the web. Angular combines declarative templates, dependency injection, end to end tooling, and integrated best practices to solve development challenges. Angular empowers developers to build applications that live on the web, mobile, or the desktop

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Apache MINA Spring

1-What is Apache MINA?

Apache MINA (Multipurpose Infrastructure for Network Application) is an open source java network application framework. MINA is can be used to create Scalable, high performance Network applications. MINA provides unified API's for various transports like TCP, UDP, Serial communication, In-VM pipe. It also makes it easy to make an implementation of custom transport type. MINA provides both high-level and low-level network API's.
Application Structure

MINA based Application Architecture

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Cắt css cho trang web đầu tiên của bạn

Lập trình viên code java hay rất e ngại khi gặp phải phần thiết kế web, tuy nhiên một chút kiến thức căn bản có thể giúp java coder có thể tự tin hơn trong việc chuyển đổi từ thiết kế của UI/UX + CUT CSS team sang file jsp hay các dạng  view khác; hoặc có thể thiết kế thô sơ cho trang web của bạn sau đó sẽ chờ đến phase nâng cấp để cải tiến giao diện. Bài viết của tác giả Dirk với tiêu đề Slice and code your first website sẽ giúp chúng ta có cái nhìn cơ bản công việc của những thành viên nhóm design như thế nào. Thậm chí java coder có thể thiết kế một chút website với Photoshop trong khi chờ đợi kết quả thiết kế từ thành viên nhóm UI/UX. Chúc mừng bạn! Nhưng bây giời bạn phải làm cái gì? Bạn làm thế nào để website của bạn có thể chạy tốt. Trong bài viết này, tác giả sẽ giải thích làm thế nào để chia ra và code website bằng html/css.

Okay,
tác giả sẽ giải thích cho bạn làm thế nào để cắt ra thành từng lát template của bạn trong Photoshop và làm thế nào để code nó trong Dreamweaver sử dụng những thẻ DIV.
Tệp PSD & HTMLcủa template này đã có sẵn để tải về và bạn sẽ dễ dàng hơn làm theo những bước chỉ ra. Xem trước cái mà tác giả đã hoàn thành.

Bước 1:

Bạn có thể bắt đầu với việc tải Slice and Code PSD.
Mở nó với Photoshop CS6 và chọn slice tool (có thể dùng Crop tool + lệnh Trim).

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Vẽ biểu đồ bằng thư viện Chart.js

Cài đặt Chart.JS

<script src="${contextURL}resources/js/plugin/chartjs/chart.min.js"></script>
You can download the latest version of Chart.js from the GitHub releases or use a Chart.js CDN. Detailed installation instructions can be found on the installation page.

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jQuery datepicker bootstrap-datetimepicker

Datepicker Datetimepicker

datepicker để hiển thị lịch chọn ngày/tháng/năm, trong khi datetimepicker để lựa chọn giá trị có format như HH:mm:ss DD/MM/YYYY"

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