Web Technology Questions

Q:

What is a AngularJS?

Answer

AngularJS is a framework to build the large scale and high performance web application while keeping them as easy-to-maintain. These are the features of AngularJS framework.


AngularJS is a powerful Script based on JavaScript development framework to Implement RICH Internet Application (RIA).


AngularJS is a developers options to write client side application (using JavaScript) in a clean MVC (Model View Controller) side.


Application are written in AngularJS is also cross-browser compliant. AngularJS automatically handles JavaScript code suitable for any browser.


AngularJS is an open source, completely free, and used by large number of developers around the world. It is licensed under the Apache License version 2.0.

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Q:

What is templates in AngularJS?

Answer

Templates are the rendered view with information from the controller and model. These can be a single file like index.html or multiple views in one page using "partials".

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Q:

If an array with name as "names" contain three elements, then how will you print the third element of this array?

Answer

Print third array element document.write(names[2]);

Note:- Array index starts with 0.

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Q:

Which JavaScript objects are not accessible to web worker?

Answer

Following JavaScript objects are not accessible to web worker: 


- The window object


- The document object


- The parent object

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Q:

What is a REPL in context of Node.js?

Answer

Read - Reads users input, parse the input into JavaScript data-structure and stores in memory


Eval - Evaluates the data structure


Print - Prints the result


Loop - Loops the above command until user press ctrl-c twice

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Q:

What are the Advantages of Node.js?

Answer

Aynchronous and Event Driven - All APIs of Node.js library area unit aynchronous that's non-blocking. It basically means that a Node.js based mostly server not waits for a API to return information. Server moves to next API when calling it and a notification mechanism of Events of Node.js helps server to induce response from the previous API decision.


Very FastNode.js library is very fast in execution of code.


Single Threaded but highly Scalable Node.js uses a single threaded model with event looping. Node.js uses a single threaded program and same program can services much larger number of requests than traditional server like open source.


No Buffering - Node.js applications never buffer any data. These applications simply output the data in faster.

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Q:

Are javascript and jQuery different?

Answer

jQuery is a quick as well as concise JavaScript Library that simplifies HTML document traversing, animating, event handling, & Ajax interactions for the purpose of quick web development needs. So although they are not entirely different, both are not the same either!

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Q:

What are the privacy and security features being provided by web browsers?

Answer

- Web browser supports HTTP secure method that allows more security for the sites that are involved in day to day basis transaction. 


- Security offers quick and easy way to remove the unwanted material or the things that are stored without permission like cache, cookies and history. 


- Security is being provided by the use of blockers that blocks unwanted access to the websites from the outside. 


- Web browser uses other features like disabling of JavaScript and pop up blockers to block any unwanted scripts or messages to run on the system.


- Web browser also uses the security concerns in regard of blocking the access to the secure sites that provides money transfer facilities, etc.

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