Experiment 1 – hover events

Building on our previous example, we can easily swap our click method into a hover method. Instead of having var click, we will now have var hover with the corresponding function. Feel free to open example-1.html of the chapter-5 code base to go over the complete example (http://localhost:8080/chapter-5/example-1.html). Let's review the changes necessary to change our click event to a hover event. In this particular case, we will need a little more CSS and HTML. In our <style> tag, add the following lines:

#tooltip{
position: absolute;
z-index: 2;
background: rgba(0,153,76,0.8);
width:130px;
height:20px;
color:white;
font-size: 14px;
padding:5px;
top:-150px;
left:-150px;
font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
}

This style is for a basic tooltip. It is positioned "absolutely" so that it can take whatever x and...