What is it?
In the previous modules, you learned how to create a wide variety of static charts. 👏
However, interactivity is essential web applications. Adding hover effects significantly enhances the user experience by highlighting specific series on the chart.
In this module, we'll explore several strategies for implementing hover effects using both CSS and React. Before diving into the code, let's ensure we have a clear understanding of what hover effects are.
Definition
A hover effect is a visual change that occurs when a user moves their cursor over a specific element on a webpage.
Technically speaking, tooltip are also a hover effect. But we will talk about them in a dedicated section.
When implementing a hover effect, you should be careful about:
- Design: hover effect is visually appealing and enhances the user experience. It is consistent with the overall design of your application and does not distract or confuse the user.
- Performance: hover effect is fast: no lag or delay. It does not significantly impact the performance of your application, especially when dealing with large datasets or complex viz.
Three Types of Hover Effects
In my opinion, there are three main types of hover effects: those that only modify the hovered graph item, those that modify other graph markers, and those that affect other related elements in the user interface.
Click the button below to see examples of all three types:
Observe this graph: when you hover over a circle, its style changes slightly!
While this isn't the most dramatic visual effect, it is very easy to implement using a single CSS pseudo-element.
We'll learn how to implement this in the next lesson.
Let's code
Enough theory.
Let's dive into the simplest hover effect you can create: just a few lines of CSS using pseudo-elements.