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: -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
2. What are Math Constants and Functions using JavaScript?
Correct Answer: Math object has two constant : MathPI and MathE Math object has following functions: - Mathabs(val1); It will give absolute value of val1 - Mathmax(val1,val2); This fuction will return maximum value from val1 and val2 - Mathrandom(); This function will return a random number between 0 and 1 - Mathfloor(val1) This function will returns decimal value of val1
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
6. .What are the different types of environments available in the web?
Correct Answer: Web application provides services (Free and Paid) apart from information Ex: Online Banking System It provides Bank information , Branches & ATM information, Loans information etc And It provides balance enquiry, Fund transfer, Bill payments like services
Correct Answer: Web browser is a software application used to locate,retrieve and display content on the World Wide Web, including Web pages, images, videos and other files Examples : Microsoft Internet Expiorer , Mozilla Firefox , Google Chrome, Opers , Safari etc