Optional (?)
A property that may be left out
Words that go with it
- .map()"For each item in this list, make this": turns a list into cards
- ArrayA list in square brackets
- Arrow functionA short function written with =>
- Booleantrue or false
- FunctionNamed instructions that run when used; components are functions
- Import / exportUsing something from another file / sharing something with other files
- keyA unique name tag on each item made by .map()
- ObjectOne thing described by name: value pairs in curly braces
- ParameterAn input a function receives, in its round brackets
- Problems panelCursor's list of every error and warning in your project
- PropertyOne name: value pair in an object, read with a dot: service.title
- Red squiggleTypeScript (or ESLint) pointing at a mistake; hover to read it
- StringText, in quotes
- TypeA label describing what shape a value must have
- TypeScriptJavaScript with types that catch mistakes before visitors see them
- ValueA piece of information: text, a number, true/false, or nothing
- VariableA name for a value: const name = "Kofi"