What does document.getElementById("intro") function returns if "intro" does not exist?

Which of the following is not a DOM Mouse Event?

True or False? DHTML is a single technology.

Which of the following code will display the text “Invisible Man”? <div id="name" class="person">The Invisible Man</div>

Event bubbling is useful because of which of the following reasons?

Which DHTML technology does the following code utilize? document.write(Date());

You have a function to change the image with id im… function changeimg(givenImg) { document.getElementById('imageID').src=givenImg } How would you make the webpage display 'image2.gif', only for the time that the user clicks the image?

Which enables JavaScript Document Object Model to provide access to the HTTP header?

You want to disable the selection of text on the webpage. While trying to select some text, the user should see 'not-allowed' cursor. Which help you implement this by using JavaScript and IE 5+ browser?

Which help you highlight some of the running text on a web page?

Is the following statement correct? The width of an element must be set for making filters work.