Variables

A variable is a named container for data. The name of the variable is up to you (take a look at naming guidelines in the Style Guide), but ideally, it should be easy to write and remember while also providing context for the data being stored.

To declare a variable, start with the keyword const (for values that will not change) or let (for values that may change) and assign the value using =.

const profName = "Eric"; // will never change
let profCity = "Oxford"; // may change in the future
const x = 2021; // terrible variable name, what is it for?
const year = 2021; // not a great variable name, too generic
const yearHired = 2021; // better variable name

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See the Pen Variables (IMS322 Docs) by Eric Sheffield (@ersheff) on CodePen.