Showcase nullish coalescing in JavaScript

nullish-coalescing-example.js

const strVar = '';
const numVar = 0;
const boolVar = false;
const nullVar = null;
const undefinedVar = undefined;

// Example for  OR operator ||
console.log("strVar || 'default string' = ");
console.log(`'${strVar || 'default string'}'`);         // Output will be 'default string'

console.log("numVar || 100 = "); 
console.log(numVar || 100);                             // Output will be 100

console.log("boolVar || true = ");
console.log(boolVar || true);                           // Output will be true

console.log("nullVar || 'another string' = ");
console.log(`'${nullVar || 'another string'}'`);        // Output will be 'another string'

console.log("undefinedVar || 'undefined string' = ");
console.log(`'${undefinedVar || 'undefined string'}'`); // Output will be 'undefined string'

// Example for nullish operator ??
console.log("strVar ?? 'default string' = ");
console.log(`'${strVar ?? 'default string'}'`);         // Output will be ''

console.log("numVar ?? 100 = "); 
console.log(numVar ?? 100);                             // Output will be 0

console.log("boolVar ?? true = ");
console.log(boolVar ?? true);                           // Output will be false
            
console.log("nullVar ?? 'another string' = ");
console.log(`'${nullVar ?? 'another string'}'`);        // Output will be 'another string'

console.log("undefinedVar ?? 'undefined string' = ");
console.log(`'${undefinedVar ?? 'undefined string'}'`); // Output will be 'undefined string'