JavaScript Test: GK Quiz! Trivia
JavaScript is a programming language that enables you to carry out complex items on web pages. It's a scripting language that helps create rich, updated content, including multimedia, animated images, graphics, etc. Javascript was developed to make web pages live, also known as "Live Script." This quiz will test your knowledge about the functions and basics of Javascript.
Questions and Answers
- 1.
JavaScript File Has An Extension of:
- A.
.Java
- B.
.Js
- C.
.javascript
- D.
.xml
Correct Answer
B. .JsExplanation
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.Rate this question:
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- 2.
The ____________ Tag is used To Give Heading To The Table.
- A.
Head
- B.
Td
- C.
Th
- D.
Caption
Correct Answer
D. CaptionExplanation
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.Rate this question:
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- 3.
IsNaN() Evaluates And Argument To Determine if Given Value:
- A.
Is Not a Null
- B.
Is Not a Number
- C.
Is Not a New Object
- D.
None Of The Above
Correct Answer
B. Is Not a NumberExplanation
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.Rate this question:
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- 4.
Function is Used To Parse a String To Int:
- A.
Integer.Parse
- B.
Int.Parse
- C.
Parse.Int
- D.
None
Correct Answer
B. Int.ParseExplanation
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.Rate this question:
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- 5.
Which Of The Dialog Box Display a Message And a Data Entry Field?
- A.
Alert()
- B.
Prompt()
- C.
Confirm()
- D.
Msg()
Correct Answer
B. Prompt()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.Rate this question:
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- 6.
Event is Used To Check An Empty Text Box:
- A.
Onclick()
- B.
OnFocus()
- C.
OnBlur()
- D.
None
Correct Answer
C. 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().Rate this question:
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- 7.
Method Prompt() Contain ........Number of Parameters.
- A.
One
- B.
Two
- C.
Three
- D.
Zero
Correct Answer
B. TwoExplanation
The method Prompt() contains two parameters.Rate this question:
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- 8.
GetMonth() returns The Month as:
- A.
Int
- B.
Float
- C.
Char
- D.
String
Correct Answer
A. IntExplanation
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.Rate this question:
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- 9.
If Button is clicked .......Event Handler is invoked.
- A.
OnSubmit()
- B.
OnLoad()
- C.
IsPostBack()
- D.
Onclick()
Correct Answer
D. Onclick()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.Rate this question:
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- 10.
A Function Associated With An object is Called:
- A.
Function
- B.
Method
- C.
Link
- D.
None
Correct Answer
B. MethodExplanation
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.Rate this question:
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- 11.
Inside which HTML element do we put the JavaScript?
- A.
Js
- B.
JavaScript
- C.
Script
- D.
Scripting
Correct Answer
C. ScriptExplanation
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.Rate this question:
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Apr 03, 2024Quiz Edited by
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Aug 21, 2008Quiz Created by
Tannu
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