The Exit Selection
Explore how to handle excess elements in D3.js data visualizations using the exit selection. Understand the role of the exit selection in identifying elements to remove when data changes and how the join() method simplifies adding and removing elements efficiently.
We'll cover the following...
We'll cover the following...
The exit selection is the opposite of the enter selection. It is an array of elements that should be removed. In some cases, we may have more elements than we have data. The excess elements should be removed.
Whenever we call the data() method, D3 will create an exit selection. Let’s view what the exit selection looks like. First, ...