JavaScript MCQs with answers Page - 32

Here, you will find a collection of MCQ questions on JavaScript. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which is not valid data type in Javascript

  • (A) Undefinded
  • (B) Boolean
  • (C) float
  • (D) Number

A

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Q. Which type of language is Javascript

  • (A) Programming
  • (B) Scripting
  • (C) Markup
  • (D) None of the above

A

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Q. By which javascript code is used

  • (A) Classes
  • (B) Methods/Functions
  • (C) RMI
  • (D) Events

A

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Q. Which tag is used to write the javascript code

  • (A) <script>
  • (B) <sp>
  • (C) <javascript>
  • (D) <java>

A

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Q. Which of the following function of String object causes a string to be italic, as if it were in an <i> tag?

  • (A) fontsize()
  • (B) fontcolor()
  • (C) fixed()
  • (D) italics()

A

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Q. What will be the output of following JavaScript code?

Code: 
<script type="text/javascript"> 
var a="Tanmay"; 
var x=a.lastIndexOf("a"); 
document.write(x); 
</script>
  • (A) 4
  • (B) 5
  • (C) 1
  • (D) 2

A

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Q. Purpose of designing the Javascript

  • (A) To Perform Server Side Scripting Opertion
  • (B) To add interactivity to HTML Pages
  • (C) To Style HTML Pages
  • (D) All of the above

A

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Q. Which of the following function of Array object removes the last element from an array and returns that element?

  • (A) push()
  • (B) delete()
  • (C) pop()
  • (D) link()

A

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Q. A Javascript developed in Unix machine

  • (A) will throw errors and exceptions
  • (B) must be restricted to a Unix Machine only C.
  • (C) will be displayed as a JavaScript text on the browser
  • (D) will work perfectly well on a Windows Machine

A

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Q. What will be the output of following JavaScript Code?

Code: 
<script type="text/javascript" language="javascript"> 
  
var a = "Tanmay Acarya"; 
var result = a.substring(4, 5); 
document.write(result); 
  
</script>
  • (A) a
  • (B) y
  • (C) n
  • (D) c

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