You can use navigator.app string for this task. The string will automatically carry out this task and you should take care to define it at the correct time. The user should also ensure that the instructions are performed in the correct way. There might be instances where some other address of the server or IP needs to be defined in order to find it.
If the argument is not a number, isNaN function can be used. This function yields true if the argument is not a number and false otherwise.
- What are undefined and undeclared variables?
There are many programs that actually does not exist in a program. These are referred to as undeclared variables. A runtime error is shown on the screen if the program goes on to read the value of the undeclared variable. Whereas declared variables are those that are defined properly within a program, but have not been given any value by the user. In case the program goes further with reading them, the value is always returned.
- What do you understand about the term Global variables and mention which keyword is used for declaring them?
A lot of times, programmers are required to use the text box to directly enter the input values. In such instances, a prompt box is of great help to the users. Box and label are available for making it easy for programmers and to simply enter the text or the number.
While View State is used only for accessing a session, Session State is a function that is used for accessing all pages within a web application.
Yes, it is possible to access it very easily. Automatic type conversion is actually a basic method type that most developers employ for conversion.
There are many instances while writing a code that the user finds that more than one operator might have the same values. This is where strict equality operator plays an important role. With this operator, it is possible to return the actual value of the operator without disturbing the operation.
- Mention the structures in v that can be regarded as looping structures
They are do-while, While and For loops
The two basic groups of data types are Primitive and Reference types.
- How do you delete variables in a program? Also, tell if there is any cap on deletion
Variables in a program can be deleted by using the operator, Delete. With this operator, it is possible to delete the objects as well as the variables in a program. However, this operator cannot delete those variables and objects that have been already declared with the keyword var. In order to delete this kind of variables, the user should use another command.
- Briefly state when to use Null
Null is basically used when a string does not have any value or object. This function will enable the array to go forward smoothly and executive it’s task reliably. Users need not have to fret while performing this as it does not yield any runtime error at any stage. Moreover, Null can also be used to check whether all the strings have numbers in them or defined variables.
When this error appears on the screen, it basically means that the variable that the user is considering is not present in the code or that the property does not exist. Additionally, the error can also be shown if the variable has not been given any value. These concerns must be addressed before the user goes forward with the program or else, it will have an impact on the entire code.
One difference between both pertains to the buttons they have. The Confirmation box has two buttons, namely OK & Cancel. While the Alert box has only one button that is OK. Additionally, there are some differences with regard to a configuration which is hidden for security purposes.
A lot of times, users are required to work with special characters such as single quotes, double quotes, and ampersands for performing special functions. At such instances, the Escape character is used. The users can use a backlash to display it again in any instance. A backlash has to place before the character to display it in a proper way.
Variable typing is essentially an approach which enables developers to give a number to any variable which can then be given to a string as well.
A primary issue that can arise relates to content replacement with no message. In this case. Appending approaches can’t be employed which is another setback. In innerHTML, there is no validation and in many instances, it needs to be added to the document that has the consequence of yielding errors on a large scale.