Web Technology Questions

The interface org.apache.struts.upload.FormFile is used for the struts file upload application. This interface represents a file that has been uploaded by a client. It is the only interface or class in upload package which is typically referenced directly by a Struts application.

This is not specific to Struts in case of DHTML but the two things that are needed in DHTML page is: first, the form needs to specify an enctype of multipart/form-data and second an <input> form control of type file.

Following are the steps to load file in DHTML:

- Creating a bean

- Writing the ActionClass.

- Mapping the bean in struts-config.xml

- Defining actionmapping

- Developing the DHTML page.

Asc() - Returns ANSI Character Code 

Chr() - Returns Character from ANSI Code 

InStr() - Find a string within another 

InStrRev() - Find a string within another (Reverse) 

LCase() - Convert a string to lowercase 

Left() - Crops a string from left 

Len() - Determine the length of a string 

LTrim() - Remove leading spaces from a string 

Mid() - Crops a string 

Replace() - Replace a substring within a string 

Right() - Crops a string from right 

RTrim() - Remove trailing spaces from a string 

Space() - Creates a string with the specified number of spaces 

StrComp() - Compare two strings 

String() - Creates a repeated character string 

StrReverse() - Reverse the characters of a string 

Trim() - Remove both leading and trailing spaces from a string 

UCase() - Convert a string to uppercase 

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.

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".

In general, Services are Javscript functions and are responsible to do a specific tasks. Factories implements module pattern in which we use a factory method to generate an object which is use for building models.

It's syntax is
module.factory('factoryName', function);

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

Following JavaScript objects are not accessible to web worker: 

- The window object

- The document object

- The parent object

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

Note:- Array index starts with 0.