JavaScript is not a language

the_worst_is.js

// https://codeburst.io/javascript-null-vs-undefined-20f955215a2
// With default parameters, `null` does not use default parameters
let logDefault = (str = 'default') => {
  console.log(str);
}

logHi();
// => hi
logHi(undefined);
// => hi
logHi(null);
// => null


// https://codeburst.io/javascript-null-vs-undefined-20f955215a2
// `null` is a primitive with an object type
typeof null
// => "object"


// https://www.destroyallsoftware.com/talks/wat
[] + []
// => ""


// https://www.destroyallsoftware.com/talks/wat
[] + {}
// => "[object Object]"
{} + []
// => 0
{} + {}
// => NaN