Day 2: Switch, Ternary & Truthy/Falsy

Daily Objective

Use switch for discrete equality branching, ternary operators for concise inline assignments, and understand truthy/falsy values.

1. The Ternary Operator

const age = 20;
const status = age >= 18 ? 'Adult' : 'Minor';

2. The switch Statement

const day = 'Monday';
switch (day) {
  case 'Monday':
  case 'Tuesday':
    console.log('Weekday');
    break;
  case 'Saturday':
  case 'Sunday':
    console.log('Weekend');
    break;
  default:
    console.log('Midweek');
}

3. Truthy vs Falsy

The 6 standard falsy values in JavaScript:

• false, 0, "" (empty string), null, undefined, NaN. Everything else is truthy!

Daily Hands-on Practice (70%)

1. Refactor an if/else variable assignment into a one-line ternary operator.
2. Test truthiness of values like [] (empty array: truthy!), 0, and "0".