What are Math Constants and Functions using JavaScript?

Correct Answer: Arrays are created by using new Array() in Java Script For example : var employees = new Array(); The elements to this array is assigned as follows : employees[0] = "Kumar" employees[1] = "Fedrick"

Correct Answer: Files can be read and written by using java script functions ? fopen(),fread() and fwrite() The function fopen() takes two parameters ? 1 Path and 2 Mode (0 for reading and 3 for writing) The fopen() function returns -1, if the file is successfully opened Ex: file=fopen(getScriptPath(),0); The function fread() is used for reading the file content Ex: str = fread(file,flength(file)); The function fwrite() is used to write the contents to the file Ex(): file = fopen("c:\MyFiletxt", 3);// opens the file for writing fwrite(file, str);// str is the content that is to be written into the file

Correct Answer: NaN stands for ?not-a-number? The function isNaN determines the argument or the value is a NaN The function returns true if the argument is not a number, otherwise returns false

Correct Answer: Windows object is top level object in Java script It contains several other objects such as, document, history, location, name, menu bar etc, in itself Window object is the global object for Java script that is written at client-side Information pertaining to the client browser and system is returned by the navigator object of JavaScript Navigator object is the top level object for all users

Correct Answer: To send the characters that can not be specified in a URL should be converted into their equivalent hex encoding To perform this task the methods encodeURI() and decodeURI() are used For example, the following code snippet performs the encoding of URL:

Correct Answer: -The shift() method is similar as the pop() method but the difference is that Shift method works at the beginning of the array -The shift() method take the first element off of the given array and returns it The array on which is called is then altered For example var myarray = ["apple ", "banana ", "mango "]; consolelog(myarrayshift()); consolelog(myarray); we get the following console output: apple ["banana ", "mango "]; When we call shift() on an empty array, it will return an undefined value

Correct Answer: This is a scripting language developed by Microsoft and is based loosely on Visual Basic Its functionality in a web environment is dependant upon either an ASP engine or the Windows Scripting Host, and must be used on a Windows hosting platform

Correct Answer: Intranet (local Network) Internet (wide area Network) Extranet (Private network over internet)

Correct Answer: Basically website is an information provider, It provides information globally using internet protocols

Correct Answer: Web portal is a business gateway, It organizes business operations Ex: Online shopping portals, Job portals etc