JavaScript MCQ Questions with answers and solutions Page 22

Q. Which is the correct syntax to call an external JavaScript file in the current HTML document?

(A) <script src="jsfile.js"></script>
(B) <script href=" jsfile.js"></script>
(C) <import src=" jsfile.js"></import>
(D) <script link=" jsfile.js"></script>

💬 Discuss

✅ Correct Answer: (A) <script src="jsfile.js"></script>

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:51 pm in JavaScript

Q. Which JavaScript method is used to access an HTML element by id?

(A) getElementById()
(B) getElement(id)
(C) getElementById(id)
(D) elementById(id)

💬 Discuss

✅ Correct Answer: (C) getElementById(id)

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:52 pm in JavaScript

Q. Which property is used to define the HTML content to an HTML element with a specific id?

(A) innerText
(B) innerContent
(C) elementText
(D) innerHTML

💬 Discuss

✅ Correct Answer: (D) innerHTML

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:52 pm in JavaScript

Q. Which JavaScript method is used to write HTML output?

(A) document.write()
(B) document.output()
(C) console.log()
(D) document.writeHTML()

💬 Discuss

✅ Correct Answer: (A) document.write()

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:53 pm in JavaScript

Q. Which JavaScript method is used to write on browser's console?

(A) console.write()
(B) console.output()
(C) console.log()
(D) console.writeHTML()

💬 Discuss

✅ Correct Answer: (C) console.log()

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:53 pm in JavaScript

Q. Which JavaScript method is used to write into an alert box?

(A) window.alertHTML()
(B) window.alert()
(C) window.alertBox()
(D) window.alertContent()

💬 Discuss

✅ Correct Answer: (B) window.alert()

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:53 pm in JavaScript

Q. Which is the correct JavaScript statement to display "Hello Boss!" into an alert box?

(A) alert("Hello Boss!");
(B) alert('Hello Boss!');
(C) alert(Text:'Hello Boss!');
(D) Both A and B.

💬 Discuss

✅ Correct Answer: (D) Both A and B.

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:54 pm in JavaScript

Q. Which is the correct JavaScript statement to print the addition of two numbers 10 and 2o in a paragraph whose id is "result"?

(A) getElementById("result").innerHTML = 10+20;
(B) getElementById("result").innerHTML = "10+20";
(C) getElementById("#result").innerHTML = 10+20;
(D) All of the above

💬 Discuss

✅ Correct Answer: (A) getElementById("result").innerHTML = 10+20;

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:54 pm in JavaScript

Q. What is the use of this JavaScript statement?

Code:

<button onclick="window.print()">Submit</button>

(A) It will write "Submit" on the current Window
(B) It will print the content of the current page
(C) It will write the content of the current page in the browser’s console
(D) None of the above

💬 Discuss

✅ Correct Answer: (B) It will print the content of the current page

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:55 pm in JavaScript

Q. In JavaScript, single line comment begins with ___.

(A) #
(B) /*
(C) $
(D) //

💬 Discuss

✅ Correct Answer: (D) //

Published by Ram Sharma ⭐ 193.88K Points at 18-Jun-2022 09:55 pm in JavaScript

JavaScript MCQs with answers Page - 22

Q. Which is the correct syntax to call an external JavaScript file in the current HTML document?

Q. Which JavaScript method is used to access an HTML element by id?

Q. Which property is used to define the HTML content to an HTML element with a specific id?

Q. Which JavaScript method is used to write HTML output?

Q. Which JavaScript method is used to write on browser's console?

Q. Which JavaScript method is used to write into an alert box?

Q. Which is the correct JavaScript statement to display "Hello Boss!" into an alert box?

Q. Which is the correct JavaScript statement to print the addition of two numbers 10 and 2o in a paragraph whose id is "result"?

Q. What is the use of this JavaScript statement?

Q. In JavaScript, single line comment begins with ___.

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