what typeof does in js code example

Example 1: javascript find type of variable

> typeof "foo"
"string"
> typeof true
"boolean"
> typeof 42
"number"

if(typeof bar === 'number') {
   //whatever
}

Example 2: typeof in js

typeof("iAmAString");//This should return 'string'
//NO camelCase, as it is a JS Keyword