typeof(3) 'number'
typeof(3) === typeof(4.32) true
5/0 Infinity
3/" bob" NaN
NaN === NaN false
typeof(NaN) 'number'
isNaN(NaN) true
Math.pow(2,3) 8
var firstName = "cindy"; undefined
var y; undefined
y === "cool" false
"some" + "person" 'someperson'
var first = "Bart"; undefined
var last = "Simpson"; undefined
first + " " + last 'Bart Simpson'
first + ' ' + last 'Bart Simpson'
"cool".length 4
"phat" === "phat" true
typeof("cats") 'string'
3 + "bob" '3bob'
round(4.87)
Math.round(4.87) 5
6 / "2" 3
3 * "bob" NaN
var x, y; undefined
var sport; undefined
var hobby = "programming" undefined
var sport; undefined
var sport; undefined sport === undefined true
typeof("brogrammer") 'string'