- Falsy Values
has 6 types: undefined null Nan - not a number 0 - zero '' - empty strings false
- const vs let vs var
all variable types block scope(ES6): const - constant value (can reaasign value in objects and arrays) let - reassigning value
lexical scope(deprecated): var - reassigning value
- Double Equal vs Triple Equal
javascript type value vs value and type
value1 = 5 value2 = '5'
(value1 == value2) //true (value1 === value2) //false