+++++ addClass removeClass
Every HTML-Element has so called attributes.
One of the possible attributes, is the class-attribute.
If you write the HTML-document, you add the class-attribute
within the Element-Tag by using the syntax
class-keyword = then a string
containing the class-name
OR mutliple class-names which are =separated=from=eachother= by a space
<div class="myClass1 myClass2 myClass3" ></div>
you now have a DIV-Element carrying 3 classes myClass1, myClass2 and myClass3
As part of its CSS-category-of-Methods jQuery gives you the ability
to manipulate this class-attribute
by providing the addClass()-, removeClass()-, toggleClass()-Methods.
You will have to provide the Method at least 1 argument
which is the string VALUE of the class-name.
Thus you have to change
The confusion when to use a pre-pending dot or NOT...
In the Cascading Style Sheet syntax,
you have to prepend-a-dot to the classname
so the CSS will interpret it as a class-attribute
So in the file style.css you will find an object
identified by .active-slide,
In this .active-slide object
the background property-key is set to a particular VALUE
jQuery uses the same syntax to identify a class-attribute
like in the jQuery-selector
$('.active-slide') by which this HTML-Element and all it's CHILDREN
are selected into a jQuery-object,
This parent-HTML-Element carries the class-attribute with class-name 'active-slide'
<<== play around