Foundations of D3: Data Binding Scope

A Lesson in Binding Data

In an effort incrementally introduce complexity, data is bound one datum at a time with a for loop to blend the declarative/functional paradigm of D3 and the imperative/procedural paradigm of standard Javascript.

In this example we can see how D3's data binding functions (data() and datum()) create a closure encapsulating the state of variables at the time the data is bound.

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