JavaScript is a programming language used to make things do things. For example when a button is pressed it does something. JavaScript is written as functions that do something when they are called.
JavaScript can be written inside of an html document or externally as a .js file. In JavaScript the main way that it works is that you declare a function, you tell it what it does and it does it. Javascript can be used to change html or css when it is triggered.
| Name | What It Does | Example |
|---|---|---|
| Let | Declares a variable/variables | Let x |
| Const | Declares a constant that wont change | const x=10 |