3.1 Variables and Strings

• What is a Variable
• Defining a Variable

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What is a Variable

Variables are containers for storing data values subject to change

Fundamental to EVERY and ANY decent program (in any language)

Defining a Variable

Simply state the name of the variable, set equal to the desired value (numeric, text, whatever)

# define your variables
x = 'ruffs'
y = 24

# print variables
print(x)
print(y)

unicorn
24

%%js 

// define variables 
let x = 'ruffs'; // defines a var, can be updated but not re-declared in the same scope
const u = 24; // defines a block-scoped constant, cannot be updated or re-declared.
var w = ['h', 'i']; // defines a var, can be updated or re-declared. It’s function-scoped

// log variables in console
console.log(x);
console.log(u);
console.log(w);