Web Technology Questions

An alert box displays only one button which is the OK button whereas the Confirm box displays two buttons namely OK and cancel.

JavaScript is a scripting language most often used for client-side web development.

A child selector is used when you want to match an element that is the child of another specific element.
The parent and child selectors are separated by spaces.
The following selector locates an unordered list element within a paragraph element and makes a text within that element bold.

p > ul {font-weight: bold;}

I/O operations like reading or writing a file is not possible with client-side javascript. However , this can be done by coding a Java applet that reads files for the script. 

In angular.js services are the singleton objects or functions that are used for carrying out specific tasks.
It holds some business logic and these function can be called as controllers, directive, filters and so on.

To make an image draggable, the draggable attribute is set to true:

<img draggable="true">

- localStorage object stores the data without an expiry date while sessionStorage object stores the data only for one session. 

- With localStorage object, data will not be deleted when the browser window is closed while the data is deleted when the browser window closes with sessionStorage objects.

- Web browser is used to run the software application that allows retrieving, presenting and traversing the information from one place to another. 

- Web browser provides the resources using the WWW (World Wide Web) this can be identified by URI (Uniform Resource Identifier).

- Web browser fetches the data like web page, image, video or other piece of content from the server and displays it accordingly. 

- Web browser uses hyperlinks to display the resources and allow the users to navigate their browsers according to the resources. 

- Web browser defines the application software that is designed for the user to access and retrieve the documents using the Internet.