1.Explain what the following code
will do
$( "div#first, div.first,
ol#items > [name$='first']" )
2.What’s the deal with the $ in
jQuery? What is it and what does it mean?
3.Given the following HTML:
<div
id="expander"></div>
and the following CSS:
div#expander{
width: 100px;
height: 100px;
background-color: blue;
}
Write code in jQuery to animate the
#expander div, expanding it from 100 x 100 pixels to 200 x 200 pixels over the
course of three seconds.
4.What is method chaining in
jQuery? Provide an example.
What advantages does it offer?
5.Explain what the following code
does:
$( "div" ).css(
"width", "300px" ).add( "p" ).css(
"background-color", "blue" );
6.What is the difference between
jQuery.get() and jQuery.ajax()?
7.Which of the two lines of code
below is more efficient? Explain your answer.
document.getElementById(
"logo" );
8.Explain and contrast the usage of
event.preventDefault() and event.stopPropagation(). Provide an example.
9.What selector would I use to
query for all elements with an ID that ends with a particular string? Also, how
would I modify the selector to retrieve only <div> elements whose IDs end
with that same string? Provide an example.
10.jQuery provides a useful
.clone() method to create a deep copy of matching elements.
11.Explain the .promise() method in
jQuery, including how and why it would be used.
12.What is the proper way in jQuery
to remove an element from the DOM before its Promise is resolved?
