Please help me to get the answer

question 1

What is true of the following code?

$("h2").next().toggle();

a	The next siblings of all h2 elements will become hidden or shown with the alternate clicks.
b	The h2 heading, which is right after the last h2 element on the page, will become hidden or shown with the alternate clicks.
c	The statement is incorrect because you cannot use two methods , one after another.
d	All h2 elements and the next siblings right after them will will become hidden or shown with the alternate clicks.

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Question 2

When will the function shipCost() be executed for the first time?

window.onload = function() {

$("ship").onclick = shipCost();

};

a	When the user clicks on it.
b	It will never be executed because the code is not correct
c	When the page loads
d	When the user clicks or double clicks on it.

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Question 5

Explain the purpose of using preventDefault() as in the code below:

$("a").click(function(evt) {

evt.preventDefault();

// ...More code

};

Your answer:

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Question 6

Explain the purpose of so called "preloading images".

Your answer:

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Question 7

What type of error a browser's Developer's Tools can't help you find?

a	A browser's Developer's Tools can help you find any type of errors: logical, syntax, run-time
b	syntax
c	logical

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Question 8

jQuery code is supposed to work in _______

a	the latest version of Internet Explorer and Firefox only
b	only browsers that support it
c	Internet Explorer only
d	all the browsers

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Question 9

Rewrite the code below using JavaScript only

paragraph1

paragraph2

paragraph3

Your answer:

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Question 11

Which method of the Document interface retrieves an array of all the h1 headings?

a	getElementsByName("header")
b	getElementsByTagName("h1")
c	getElementsByTagName(h1)
d	getElementsById("h1-heading")

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Question 12

Rewrite the code using % operator instead of if statement .

Your answer:

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Question 16

What does this keyword refer to in the code below?

My Heading1

AAA

My Heading2

BBB

a	The element with the id faqs that has an h2 heading as a descendant
b	The anonymous function for the click event method
c	The collection of all h2 headings on the page
d	The current h2 heading

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Question 17

Suppose you have the following code in your JavaScript application:

var $ = function(id) {return document.getElementById(id);}

To access the paragraph

TEST

you would use the following JavaScript code:

a	$("#test")....
b	$("p.test")...
c	$("test") ....
d	$("p test")...