It is basically an object-oriented programming language that is having a lot of applications. It can be used for both server side, as well as client-side scripting and the god thing is it is known to provide the best results in every aspect. When it comes to building HTML WebPages, this language is often considered and is known to bring the most desired outcomes.
For this, task, the users can simply proceed with the navigator.app string. The string performs this task automatically and the user just needs to define it at the right time. Also, the users need to make sure that the instructions are executed in the right manner. Sometimes there is need to define the IP or other address of the server that needs to be detected.
isNan function is useful in case the argument is not a number. Actually, it remains true if the argument doesn’t have number while on the other side it remains false if it is.
This can be done with the help of a backlash. However, you need to use it at the end of the initial line otherwise it will show error at the end. The good thing is there is no limit on lines that can be created for the purpose of accommodating data. Also, doing this is not at all a big deal and one can easily handle this task.
Q. Tell something about the undeclared and undefined variables?
Basically, there are a lot of programs that actually doesn’t exist in a program and are thus known as undeclared ones. There is always a runtime error displayed on the screen in case the program proceed with reading the value of a variable which is not declared. On the other side, declared variables as the name indicates are those which are well defined within a program but they haven’t been assigned any value by the operator. The value is always returned in case program proceeds with reading them.
Q. What exactly do you know about the global variables? Which keyword you use to declare them?
The above symbol is used.
Yes, basically many times a programmer has to enter the input values directly through the text box. The prompt box is something that is extremely helpful for the users during such a situation. Label and the box are provided for the ease of programmers. They are basically used for entering the number or the text simply.
Session State is an option that can be considered to access all the pages within a web application while on the other side ViewState is used for accessing a session only
Yes, it’s possible and there is nothing much programmers have to do to access it. It is actually the most common method used by the developers when it comes to conversion
Many times during the code, there exists a problem or a condition in which the more than one operand have similar values. The strict equality operator is capable to return the true value of the operand without interrupting the operation.
Q. Name the structures in v that can be considered as looping structures
These are: While, For, and do-while loops
Q. In a program, how can you delete the variables? Is there any limit on deletion?
This task can be done simply with the help of an operator and i.e. Delete. Although it deletes all the variables, as well as the objects in a program but it’s is not possible for this operator to delete those objects and variables that are declared already with the VAR keyword. For deleting these variables, another command is to be followed. Any number of other variables can be deleted with this operator. It is also possible to erase a specific portion of a coding simply and without accessing any other command for this.
Basically, it is used when there is no object or there is no value is there on a string. It let the array proceed smoothly and perform its task very reliably. There is no need for the users to worry while executing this as it doesn’t show the runtime error in any stage. Also, this can be used in special cases to check whether all the strings have defined variables or numbers present with them or not.
Q. When can you have an error that says Undefined Value on the screen?
Well, if it appears, it simply means either the variable the user is considering doesn’t exist in the code. It is also possible that the property is not present. In addition to this, the error can also be due to the fact that variable hasn’t been assigned any value. Users need to make sure of these three steps before they proceed with anything. If this error is ignored, it can sometimes affect the entire code.
The basic difference is there are two buttons in the Conformation box and they are named as OK and Cancel. On the other side, Alert box contains only one button and i.e. OK. In addition to this, there are other differences in the configuration and they are hidden in a few cases for the security purposes.
Q. What exactly are the escape characters?
Many times the users have to work with the special characters for performing special functions. These are double quotes, single quotes or sometime ampersands. The Escape character is used in such a case. Users can make it display again anytime and this can be done with the help of a backlash. Backlash can simply be placed before the character and this makes them display in a proper manner.
The Pop method is very much similar to the shift method but there are some noticeable differences. In the pop method, the last element of the defined array is taken generally and then the same is returned. This often cut down the size of the array. On the other side, Shift method generally considers the first element of the array or any other element in the beginning.
These are basically the test files have smaller size and are generally stored in a workstation. They get created automatically when a user opens a webpage. This is for the information they need to store. This could be details of the username and the information related to what they are interested in.
It is basically an approach with the help of which it is possible for the developers to assign a number to any variable which can further be assigned to a string. It is also called a variable typing.
The very first problem that can be there is content replacement without any message. Appending approaches cannot be used and this is another drawback. There is no validation in the inner HTML and in many cases they need to be inserted in the document which causes errors on a large scale.
No, it cannot be considered at the Concept level. This is because the variables that are present in the function has the scope that is only limited inside the function. If they are approached outside the same, they are useless. Also, the functional defined have certain limits on them.
Get Updates on Tech posts, Interview & Certification questions and training schedules