JavaScript

Question 11 (1 point)

When does the ready() event handler run?

Question 11 options:

	As soon as the browser starts.
	As soon as the JavaScript load event is done.
	As soon as all the page elements are loaded in the browser.
	As soon as the Document Object Model is built.

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Question 12 (1 point)

What does the following jQuery code do? $("h2").prev();

Question 12 options:

	Gets the h2 element that precedes the current element
	Gets the element in the HTML that precedes the selected h2 element
	Gets the previous sibling of the selected h2 element
	Gets the previous sibling of the selected h2 element that is an h2 element

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Question 13 (1 point)

What does the following jQuery code do? $("#image").attr("src", imageURL);

Question 13 options:

	Gets the value of the src attribute for the element with an id of image and stores it in a variable named imageURL
	Sets the value of the src attribute for the element with an id of image to the value in a variable named imageURL
	Gets the values of the src attribute for each element with a class of image and stores them in an array variable named imageURL
	Sets the values of the src attribute for each element with a class of image to the values in an array variable named imageURL

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Question 14 (1 point)

Which of the following methods would you use to remove a class if its present or add a class if it isnt present?

Question 14 options:

	toggle()
	toggleClass()
	changeClass()
	switchClass()

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Question 15 (1 point)

Which of the following methods would you use to execute a method for each element in an array?

Question 15 options:

	html()
	hide()
	every()
	each()

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Question 16 (1 point)

Which of the following events occurs when the user moves the mouse pointer over an element and then clicks on it?

Question 16 options:

	click
	mouseover
	hover
	all of the above

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Question 17 (1 point)

Code example 8-1 $("#faqs h2").click(function() { $(this).toggleClass("minus"); if ($(this).attr("class") != "minus") { $(this).next().hide(); } else { $(this).next().show(); } });

(Refer to code example 8-1) What does the this keyword refer to in this code?

Question 17 options:

	The click() event method
	The anonymous function for the click() event method
	The current h2 heading in the processing loop
	The h2 heading that was clicked

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Question 18 (1 point)

Code example 8-1 $("#faqs h2").click(function() { $(this).toggleClass("minus"); if ($(this).attr("class") != "minus") { $(this).next().hide(); } else { $(this).next().show(); } });

(Refer to code example 8-1) If none of the h2 elements that use this event handler include a class attribute when the application starts, what happens the first time the user clicks on an h2 element?

Question 18 options:

	A class named minus is added to the element and the elements next sibling is displayed.
	A class named minus is added to the element and the elements next sibling is hidden.
	Nothing happens because the click() event method is used instead of the on event method.
	Nothing happens because the event object isnt passed to the function for the event handler.

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Question 19 (1 point)

What does the evt variable refer to in this code? $("#faqs h2").click(function(evt) { evt.preventDefault(); };

Question 19 options:

	the jQuery object
	the event object
	the this keyword
	the selector

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