JavaScript and its types

By admin, July 30, 2015


Javascript is a programming language that is most commonly used as part of web browsers whose implementations allow client-side scripts to interact with the user, control the browser, communicate asynchronously, and alter the document content that is displayed.

History of JavaScript:

JavaScript was originally developed by Brendan Eich during his stint with Netscape Communications Corporation. Competing with Microsoft for user adoption of web technologies and platforms, Netscape considered their client-server offering a distributed Operating System (OS) with a portable version of Sun Microsystems’ Java. Their aim was to provide an environment in which applets could be run.

Netscape introduced an implementation of the language for server-side scripting with Netscape Enterprise Server in December 1994. Later, JavaScript was embraced by Microsoft as well.

Features of JavaScript:

JavaScript has a huge variety of features. Following are some of the important features of JavaScript:

1.      Structured nature:

JavaScript supports much of the structured programming syntax from a computer language known as C.

2.      Object-based:

JavaScript is highly object-based. JavaScript objects are associative arrays, augmented with prototypes.

3.      Proto-types:

JavaScript uses prototypes where many other object-oriented languages use classes for inheritance. It is possible to simulate many class-based features with prototypes in JavaScript.

4.      Run-time environment:

JavaScript relies on a run-time environment to provide objects and methods by which scripts can interact with the environment. It also relies on the run-time environment to provide the ability to include/import scripts.

5.      Regular expressions:

JavaScript also supports regular expressions in a manner similar to Perl, which provide a concise and powerful syntax for text manipulation that is more sophisticated than the built-in string functions.

Javascript is an indespensible part of web and web application development. It has added a dynamic dimension to user UX/UI experience.

JavaScript trends:

1.      Responsive images:

Good responsive image support across several mainstream desktop and mobile browsers is made possible javascript incorporation. Different images can be presented based on the device’s size and orientation. For example, you might offer a photograph of a forest on a desktop but a couple of trees on a mobile device.

2.      Rise of Node.js:

Node.js has been used in high-profile systems from eBay, PayPal, Uber, Yahoo!, and Walmart but this JavaScript-based server-side technology remains a fairly niche option outside the cutting-edge tech community. But now its popularity is rising.

3.      Framework fatigue:

With thousands of useful HTML, CSS, JavaScript and server-side frameworks available to cater for every development whim, there is a lot to choose from. The overwhelming number of frameworks can lead to choice paralysis. Developers would have to spend a lot of time researching the best option.

Choosing the wrong option can be painful as a developer may need to restart everything from scratch with a different framework. Fortunately, improvements in browser technology often make frameworks redundant. Now developers can migrate to smaller, feature-specific components which can be dropped or replaced easily. The concept has already been embraced by the Node.js and Ruby communities.

Types of JavaScript:

1.      jQuery:

jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML. It is the most popular JavaScript library in use today, with installation on 65% of the top 10 million highest-trafficked sites on the Web. Being a large library, jQuery enables you to perform a larger number of functions in comparison to other Javascript libraries.

In jQuery there are hundreds of prewritten plugins available for download that speed up your development process instantly. Another advantage behind this is the efficiency and security of the script. A jQuery website has comprehensive documentation and tutorials to get even an absolute beginner in programming, a good understanding of this library.

jQuery lets user develop Ajax templates with ease, Ajax enables a sleeker interface where actions can be performed on pages without requiring the entire page to be reloaded.

2.      Angular JS:

Angular JS is an open-source web application framework maintained by Google and by a community of individual developers and corporations to address the challenges encountered in developing single-page applications.

Its Data-binding feature saves you from writing a considerable amount of boilerplate code. In Angular JS, a template is just plain-old-HTML. The extended HTML vocabulary is, to contain instructions on how the model should be projected into the view. Angular JS incorporates the basic principles behind the original Model View Controller (MVC) software design pattern into how it builds client-side web applications. Angular JS also has a built-in dependency injection subsystem that helps the developer by making the application easier to develop, understand, and test.

Leo TechnoSoft’s team of developers is extremely adept at utylizing javascript, jquery and angular js. Based upon the project and cliente requirements, we incorporate what we deem to be the most appropriate for the project specifications.

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