Unit 5 Lesson 1-8 Vocab

a function specified as part of an event listener; it is written by the programmer but called by the system as the result of an event trigger.

• Callback function

• Event

• Event-driven program

• UI Elements

The visual elements of a program through which a user controls or communicates with the application. Often abbreviated UI.

• Event listener

• Event-driven program

• User Interface

• Callback function

on-screen objects, like buttons, images, text boxes, pull down menus, screens and so on.

• events

• Event listener

• User Interface

• UI Elements

a program designed to run blocks of code or functions in response to specified events (e.g. a mouse click)

• Debugging

• Event-driven program

• Event handling

• Event

Finding and fixing problems in an algorithm or program.

• Editing

• Testing

• Debugging

• Practicing

an overarching term for the coding tasks involved in making a program respond to events by triggering functions.

• Event handling

• Event-driven program

• Event

• User Interface

All values in a programming language have a "type" - such as a Number, Boolean, or String - that dictates how the computer will interpret it. For example 7+5 is interpreted differently from "7"+"5"

• Expression

• Variable

• Data Type

• Event

A placeholder for a piece of information that can change.

• Variable

• Expression

• Data Type

• Event

A variable whose scope is "global" to the program, it can be used and updated by any part of the code. Its global scope is typically derived from the variable being declared (created) outside of any function, object, or method.

• Local Variable

• Global Variable

dictates what portions of the code can "see" or use a variable, typically derived from where the variable was first created.

• Global variable

• Local variable

• Variable Scope

• Logical expression