Different types of scripts and their features

There are different types of scripts that have changed the whole process of programming. The various scripts are:

1) Angular Javascript

2) Knockout Javascript

3) meteor Javascript

Let us take on them one by one-

Angular JS is framework which is used to make dynamic web apps. This framework is structural in nature. We can also say that angular is html made for the web applications. Here we doesn’t mean that angular is a html but on the contrary, the functions  played by the angular are same as that of html in conceptual way. Html is made for the static documents and is a declarative language.

Angular teaches the web browsers a new syntax by using new constructs which we call as directives. Here the examples include:

1. Data Binding

2. Making forms and validating the forms

3. Attaching new behavior to DOM elements

4. Also grouping elements in html so as to make it reusable

 Angular handles and controls the DOM and Ajax glue code and put it in a well defined structure. Angular comes with many features which we call to be out-of-the-box. These features include:

1. It include everything that we require to make a CRUD(Create, Read, Update, Delete) in a cohesive set: data binding, form validation etc.

2. Teastability: Unit testing, end-to-end testing, mocks.

Now let us start with the library of the javascript which is known as knockout JS. Through this library we can create a rich and a responsive display. Also here we make use of editor user interfaces with clean underlying data model. Anytime we can have sections of UI updating dynamically i.e changing, depending on the user actions or when an external datasource changes. Through Knockout JS we can implement it in a more simple and maintainable way.

Features of Knockout JS:

  1. Elegant dependency tracking: It means that it automatically updates the right parts of our UI whenever our data models changes.
  2. Declarative Binding: It is a simple and obvious way to connect our UI to our data model. We can create a complex dynamic UIs using arbitrarily nested binding contexts.
  3. Trivially Extensible: It implements customs behavior as new declarative binding for easy reuse in just a few lines of code.  

      Additional Benefits:

  1. Pure JavaScript library: It works with both server side and client side technology.
  2. It can be added to our existing web application without requiring major architectural changes.
  3. Comprehensive suit of specification: It means that its correct functionality can be guessed by new browsers and platforms.

In the case of KO we can scale up the complexity of our code without the fear of inconsistencies. In the end we can say that KO provides complementary , high level way to link a data model to a UI.

Meteor JS is a open source real time JavaScript web application framework which is used to make pages and that too using the concept of template. Here the data inside the template can be manipulated by changing the underlying data. It allows rapid prototyping. Also with many features it is cross platform i.e. the code written on one machine with different underlying software can run on another machines having different hardware and operating system.

Using meteor we can make an application within a weekend. Also there are various principles that are kept in mind when stydying meteor, They are:

  • Meteor does not send the Html over the internet. The server sends the data and lets the client render it.
  • Meteor lets us to write code for both server and client part of our application in javascript.
  • We can use the same methods if we want to access the database from client and server.
  • All layers from database to template update themselves when necessary.
  • Meteor is open source and can easily integrate with other frameworks and tools.

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