console-log-to-body.js

const console = {
	log: (msg) => {
    const para = document.createElement('p');
    para.insertAdjacentHTML('beforeend', msg);
    document.body.insertAdjacentElement('beforeend', para);
  }
};

const space = ' ';
const empty = '';
const str = 'string';
const num = 42;

console.log(isNaN(space)); // false
console.log(isNaN(empty)); // false
console.log(isNaN(str)); // true
console.log(isNaN(num)); // false

console.log(+space); // 0
console.log(+empty); // 0
console.log(+str); // NaN
console.log(+num); // 42