Truthy & Falsey values

    // Truthy & Falsey in JavaScript
    // Boolean-ish
    // null, undefined, 0, false, '', "", NaN – FALSEY
    let log = console.log;
    let bob;  // undefined
    let es = "";
    let z = 0;
    let n = null;
    let u = undefined;
    let f = false;
    let i = !isNaN("hello");
    
    if (es || z || n || u || f || i) { 
         log('The true part')
    } else {
         log('The false part')   // will always return this
    }