Practice Javascript Interview Multiple Choice Questions with Answers Quiz-1 - MCQGeeks.com

Q.1.

What is the property to access the first child of a node?

a) timestamp.Child1
b) timestamp.Child(1)
c) timestamp.Child(0)
d) timestamp.firstChild

Q.2.

What are the properties supporting CSS styles for a document element?

a) style and font
b) style and className
c) size and style
d) className and font

Q.3.

Which of the following object belongs to the style property?

a) Element
b) Window
c) Location
d) Dynamic

Q.4.

What is the purpose of the event handlers in the JavaScript?

a) Adds innerHTML page to the code
b) Performs handling of exceptions and occurrences
c) Allows JavaScript code to alter the behaviour of windows
d) Change the server location

Q.5.

Which handler is triggered when the content of the document in the window is stable and ready for manipulation?

a) onload
b) manipulate
c) create
d) onkeypress

Q.6.

When a program contains extensive use of event handlers, which of the following is necessary?

a) Modular functions
b) Nested functions
c) Split up programs
d) Global variables

Q.7.

What is the JavaScript code snippet to find all container elements with class “reveal”?

a) var elements = document.getElementsByClassName(“reveal”);
b) var elements = document.getElementByClassName(“reveal”);
c) var elements = document.getElementByName(“reveal”);
d) var elements = document.getElementsClassName(“reveal”);

Q.8.

What is the JavaScript code snippet to update the content of the timestamp element when the user clicks on it?

a) timestamp.onLoad = function() { this.innerHTML = new Date().toString(); }
b) timestamp.onclick = function() { this.innerHTML = new Date().toString(); }
c) timestamp.onload = function() { this.innerHTML = new Date().toString(); }
d) timestamp.onclick = function() { innerHTML = new Date().toString(); }

Q.9.

Which of the following is not an object?

a) Element
b) Location
c) Position
d) Window

Q.10.

What is the JavaScript code snippet to change the class and let the stylesheet specify the details?

a) timestamp.className = “highlight”;
b) timestamp.className = “change”;
c) timestamp.className = “specify”;
d) timestamp.className = “move”;