JavaScript MCQs with answers Page - 45

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. A programming language can be called object-oriented if it provides ________ basic capabilities to developers

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) 4

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Q. If para1 is the DOM object for a paragraph, what is the correct syntax to change the text within the paragraph?

  • (A) "New Text"?
  • (B) para1.value="New Text";
  • (C) para1.firstChild.nodeValue= "New Text";
  • (D) para1.nodeValue="New Text";

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Q. Object ......... is the process of converting an objects state to a string from which it can later be restored.

  • (A) extensible
  • (B) serialization
  • (C) class
  • (D) prototype

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Q. ________________serializes only the enumerable own properties of an object.

  • (A) JSON.Objectify()
  • (B) JSON.Null()
  • (C) JSON.Stringify()
  • (D) JSON.Parse()

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Q. Microsoft has developed a popular HTML editor called?

  • (A) Dreamweaver
  • (B) FrontPage
  • (C) HomeSite
  • (D) Macromedia

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Q. which of the following are advantages of JavaScript?

  • (A) Less server interaction
  • (B) Increased interactivity
  • (C) Richer interfaces
  • (D) All of the above

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Q. Choose the correct JavaScript syntax to change the content of the following HTML code.

  • (A) document.getElementById ("letsfindcourse").innerHTML = I am a letsfindcourse;
  • (B) document.getId ("letsfindcourse") = "I am a letsfindcourse";
  • (C) document.getElementById ("letsfindcourse").innerHTML = "I am a letsfindcourse";
  • (D) document.getElement ("letsfindcourse").innerHTML = "I am a letsfindcourse";

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Q. Which of the following is correct about features of JavaScript?

  • (A) It can not Handling dates and time
  • (B) JavaScript is a object-based scripting language.
  • (C) JavaScript is not interpreter based scripting language.
  • (D) All of the above

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

  • (A) <style>
  • (B) <meta>
  • (C) <head>
  • (D) <script>

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Q. What will be printed in the console on execution of the following JS code:

Code: 
var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
var myArr= array.filter(v => v % 3 === 0);

console.log(myArr);
  • (A) myArr
  • (B) [3, 6, 9, 12, 15]
  • (C) [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
  • (D) [1, 2, 4, 5, 7, 8, 10, 11, 13, 14]

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