D3 - (Element) Lifecycle (The three state: Enter, Update, Exit)

Card Puncher Data Processing


The element lifecycle in D3 has the three state:

  • enter,
  • update and
  • exit

They are the output of a data join operation

Defining the state of the element during a data join is crucial for efficient dynamic visualizations.


  • Constant Properties are set once on enter (They will never change for the life of the element)
  • Dynamic properties are recomputed per update.
  • Animated transitions can be defined for each of the three states.

Documentation / Reference

Discover More
Card Puncher Data Processing
D3 - (Architecture|Design)

D3’s atomic operand is the selection: a filtered set of elements queried from the current document. Operators act on selections, modifying content. Data joins bind input data to elements, enabling...
Data Node Join
D3 - Data (Operator|Join) (Data binding to elements)

The data operator (binds|joins) input data to selected nodes. The data join is a general pattern that can be used to create, update or destroy elements whenever data changes. The data-join takes as input...

Share this page:
Follow us:
Task Runner