JavaScript Test: GK Quiz! Trivia

1. JavaScript File Has An Extension of:

.Java

.Js

.javascript

.xml

The correct answer is ".Js" because in JavaScript, the file extension is typically ".js". This extension is used to identify files that contain JavaScript code. By convention, JavaScript files are saved with this extension to make it clear that they contain JavaScript code that can be executed by a JavaScript engine. Other file extensions listed in the options such as ".Java", ".javascript", and ".xml" are not commonly used for JavaScript files.

Explanation

The correct answer is ".Js" because in JavaScript, the file extension is typically ".js". This extension is used to identify files that contain JavaScript code. By convention, JavaScript files are saved with this extension to make it clear that they contain JavaScript code that can be executed by a JavaScript engine. Other file extensions listed in the options such as ".Java", ".javascript", and ".xml" are not commonly used for JavaScript files.

2. If Button is clicked .......Event Handler is invoked.

OnSubmit()

OnLoad()

IsPostBack()

Onclick()

When a button is clicked, the event handler associated with it is invoked. In this case, the correct answer is "Onclick()" because it is the event that is triggered when the button is clicked. The other options, "OnSubmit()", "OnLoad()", and "IsPostBack()" are not relevant in this context as they are not specific to button clicks.

Explanation

When a button is clicked, the event handler associated with it is invoked. In this case, the correct answer is "Onclick()" because it is the event that is triggered when the button is clicked. The other options, "OnSubmit()", "OnLoad()", and "IsPostBack()" are not relevant in this context as they are not specific to button clicks.

3. IsNaN() Evaluates And Argument To Determine if Given Value:

Is Not a Null

Is Not a Number

Is Not a New Object

None Of The Above

The function isNaN() evaluates an argument to determine if the given value is not a number. It checks whether the argument is a numeric value or can be converted into one. If the argument is not a number, the function returns true; otherwise, it returns false.

Explanation

The function isNaN() evaluates an argument to determine if the given value is not a number. It checks whether the argument is a numeric value or can be converted into one. If the argument is not a number, the function returns true; otherwise, it returns false.

4. A Function Associated With An object is Called:

Function

Method

Link

None

A function associated with an object is called a method. In object-oriented programming, a method is a behavior that an object can perform. It is defined within a class and can access and manipulate the data of the object it belongs to. Methods are used to encapsulate related functionality and provide a way to interact with objects. They are called using the dot notation, where the object name is followed by the method name.

Explanation

A function associated with an object is called a method. In object-oriented programming, a method is a behavior that an object can perform. It is defined within a class and can access and manipulate the data of the object it belongs to. Methods are used to encapsulate related functionality and provide a way to interact with objects. They are called using the dot notation, where the object name is followed by the method name.

5. Which Of The Dialog Box Display a Message And a Data Entry Field?

Alert()

Prompt()

Confirm()

Msg()

The prompt() function displays a dialog box that contains a message and a data entry field. This allows the user to enter information or provide a response to the prompt. The other options (alert(), confirm(), and msg()) do not display a data entry field, making prompt() the correct answer.

Explanation

The prompt() function displays a dialog box that contains a message and a data entry field. This allows the user to enter information or provide a response to the prompt. The other options (alert(), confirm(), and msg()) do not display a data entry field, making prompt() the correct answer.

6. GetMonth() returns The Month as:

Int

Float

Char

String

The getMonth() function in programming languages such as Java or JavaScript returns the month as an integer. This means that the function will provide the numerical representation of the month, typically ranging from 0 to 11, where 0 represents January and 11 represents December. Using an integer to represent the month allows for easier manipulation and comparison of dates within a program.

Explanation

The getMonth() function in programming languages such as Java or JavaScript returns the month as an integer. This means that the function will provide the numerical representation of the month, typically ranging from 0 to 11, where 0 represents January and 11 represents December. Using an integer to represent the month allows for easier manipulation and comparison of dates within a program.

7. Method Prompt() Contain ........Number of Parameters.

One

Two

Three

Zero

The method Prompt() contains two parameters.

Explanation

The method Prompt() contains two parameters.

8. Function is Used To Parse a String To Int:

Integer.Parse

Int.Parse

Parse.Int

None

Int.Parse is the correct answer because it is a function used to convert a string representation of a number into its integer equivalent. It takes a string as input and returns the integer value. This function is commonly used in programming to convert user input or data stored as strings into integers for mathematical operations or other purposes.

Explanation

Int.Parse is the correct answer because it is a function used to convert a string representation of a number into its integer equivalent. It takes a string as input and returns the integer value. This function is commonly used in programming to convert user input or data stored as strings into integers for mathematical operations or other purposes.

9. Event is Used To Check An Empty Text Box:

Onclick()

OnFocus()

OnBlur()

None

The onBlur() event is used to check if a text box is empty. This event is triggered when the user moves away from the text box, indicating that they have finished entering text. By using the onBlur() event, developers can validate the input and display an error message if the text box is empty. The other options, onclick() and onFocus(), do not specifically check for an empty text box. Therefore, the correct answer is onBlur().

Explanation

The onBlur() event is used to check if a text box is empty. This event is triggered when the user moves away from the text box, indicating that they have finished entering text. By using the onBlur() event, developers can validate the input and display an error message if the text box is empty. The other options, onclick() and onFocus(), do not specifically check for an empty text box. Therefore, the correct answer is onBlur().

10. Inside which HTML element do we put the JavaScript?

Js

JavaScript

Script

Scripting

JavaScript code is typically placed within the <script> element in HTML documents. This element is used to define client-side JavaScript code that interacts with the HTML content of a webpage. It can be placed either in the <head> or <body> section of the HTML document.

Explanation

JavaScript code is typically placed within the <script> element in HTML documents. This element is used to define client-side JavaScript code that interacts with the HTML content of a webpage. It can be placed either in the <head> or <body> section of the HTML document.

11. The ____________ Tag is used To Give Heading To The Table.

Head

Td

Th

Caption

The correct answer is "caption". In HTML, the "caption" tag is used to give a heading to the table. It is placed immediately after the opening "table" tag and before the "tr" and "td" tags. The "caption" tag helps provide a title or description for the table, making it easier for users to understand its content or purpose.

Explanation

The correct answer is "caption". In HTML, the "caption" tag is used to give a heading to the table. It is placed immediately after the opening "table" tag and before the "tr" and "td" tags. The "caption" tag helps provide a title or description for the table, making it easier for users to understand its content or purpose.