control structures = conditionals and loops
D3 = Data-Driven Documents
The D3 library leverages SVG and JavaScript to create data visualizations through a technique called data binding so that each individual piece of the data, called a datum, is bound to an individual element on the page (usually an SVG element). Changing the data results in changing the elements as well.
ECMAScript
JavaScript is standardized as ECMAScript by the Ecma International standards organization. Within Ecma International, the Technical Committee 39 (TC39) is responsible for developing the JavaScript language.
Event bubbling = triggering an event on an element causes triggering the event on all its ancestors
When an event is triggered on an element, it also gets triggered on all the element's ancestors (parents, parents of parents, and so on). If an ancestor has a separate event handler attached to it, it would also receive the event. An event "bubbles up" through the DOM, from the innermost element to the outermost element.
Event delegation
This lets us attach a single event handler, rather than using a separate handler for each DOM element.
JSON = JavaScript Object Notation
PEMDAS = parentheses, exponents, multiplication, division, addition, subtraction (the order of operations)
Prototype-Based Inheritance = an older system than classes in JavaScript that still is used
That consists of
- a constructor function (a regular, standalone function) and
- a prototype (a constructor's object-property that instances should be modeled after).
The JavaScript's class-based inheritance is a syntactic sugar for prototype-based inheritance.
SVG = Scalable Vector Graphics
XML = Extensible Markup Language